Mathematical models allow us to extrapolate from information currently available about the state and progress of an outbreak, to predict future cases. In this article, we illustrate how, using mathematical models, the COVID-19 outbreak can be modelled mathematically to help prepare for the worst-case scenario and to develop a vaccination policy.
As can be seen from Figure 1, it is clear that the outbreak of COVID-19 in East Africa is taking a similar shape to that of China, USA and other European countries. The infections in China seem to have flattened by the last week of February 2020. East African countries seem to be at different phases of the disease outbreak. Kenya has the highest number of reported cases so far. This could be attributed to the relatively higher number of tests Kenya is carrying out compared to other East African countries. The United States has over 800,000 confirmed cases so far. The time it will take for the infections to significantly slowdown is of much interest to all the stakeholders.
Daily Confirmed Cases
The daily confirmed cases in East Africa, China, USA and some selected countries in Europe are given in Figure 2. It is clear that the confirmed cases in East Africa are still very low compared to Europe, the US and China. This could be attributed to the relatively fewer tests in East Africa. However, Tanzania has reported the highest daily confirmed cases (84) followed by Kenya (29). Daily confirmed cases in China, UK, Italy, France, and Germany are declining while they are increasing in Russia. The trend is quite unstable in USA.
Daily Confirmed Cases Curve in Europe, USA and China
As can be seen from Figure 3, the infections in China, Italy, France, Germany and Spain are in the decline. On the other hand, the daily infections in the US and Russia are yet to start declining.
Considering that the follow-up in China started on 2 December 2019 while in all other countries in the world it started on 22 January 2020, Figure 4 shows the time it took China, Italy, France, Germany and Spain to experience a downward trend in daily infections.
These countries took 67 days, on average, to experience a downward trend in daily infections. Considering the health facilities in these countries and the time they took to implement a total lockdown, 67 days seems to be the earliest time a country can take to experience a downward trend in COVID–19 infections taking into account the measures taken by these countries such as testing, lockdown, social distancing, surveillance and contact tracing. 140 days (about 5 months) is the minimum time any country will take to return to normalcy in terms of COVID-19.
Daily Confirmed and Recovered Cases
Figure 5 gives the daily confirmed and recovered cases in China and Kenya. It is clear that the number of recovered cases in Kenya is currently lower than the number of daily infections. The daily infections in Kenya seem to be increasing despite the country having experienced a decline around the second week of April 2020. This could be attributed to the increased number of daily tests. The recoveries in China had overshot the infections by the first week of March 2020.
Daily Recovered and Dead Cases in East Africa
Figure 6 gives the percentage of recovered and dead cases in East Africa. Burundi has reported the highest percentage deaths (20 per cent). South Sudan has not recorded any recoveries or deaths so far despite reporting four confirmed cases so far. Uganda and Rwanda have not reported any deaths so far. The percentage of recoveries in the two countries (Uganda and Rwanda) are the highest so far in East Africa. The percentage recovered is a key parameter in modelling of infectious diseases. Every country in the world will have its own recovery rate based on such factors as status of health facilities and mean age at infection.
African Countries with the Highest Number of Confirmed Cases
As can be seen in Figure 7, Egypt, South Africa and Morocco have over 3,000 confirmed cases while Algeria has slightly over 2,500 cases. Ghana and Cameroon have slightly over 1,000 confirmed cases so far.
Recoveries and Deaths in African Countries with the highest number of Confirmed Cases
As can be seen in Figure 8, Algeria has the highest recovery and death rates amongst the six countries. Furthermore, among the six African countries, only Algeria has a death rate higher than 10%. Ghana has the lowest death rate of the six African countries while having the highest number of confirmed cases.
Recoveries and Deaths in some selected countries outside Africa
Figure 9 gives the percentage of recoveries and deaths in China, the US and some selected countries in Europe. Surprisingly, recoveries in the UK are very low compared to other major economies in Europe. Also, the number of deaths in the UK are greater than the recoveries. This could be pointing to a strained National Health System (NHS). The recoveries are highest in China (92.6 per cent), an indication of the expected recovery rate in a well-developed country which took the necessary steps early enough. Similarly, a death rate of 5.5 per cent in China points to the expected long-term death rate in a well-developed country which took the necessary steps early enough.
Prediction of Infection in Kenya
The transmissibility of COVID-19 was assessed through the estimation of the reproduction number R, defined as the number of expected secondary cases per infected case. In the early stages of an outbreak, and assuming no immunity in the population, this quantity is also the basic reproduction number R0, i.e. R in a fully susceptible population.
Figure 10 gives the estimated reproduction number of 1.241. This estimate is derived from the available daily COVID-19 incidences in Kenya so far. A serial interval distribution with a mean of 7.5 days and a standard deviation of 3.4 days was used, similar to the COVID-19 Wuhan characteristics.
Predicted Infections in Kenya for the next 5 days
Figure 11 gives the projected incidences in Kenya for the next five (5) days. For the country to experience a reduction in infections, measures must be taken to reduce the reproduction number by continuing to stress on social distancing, hand washing, etc. Infections can be minimised by implementing targeted total lockdown.
Table 1 shows the projected daily infections from 22/04/2020 to 26/04/2020. The upper limits can be taken as the worst-case scenario for the given transmission rate of 1.2 for about 600 daily tests for COVID-19 in Kenya. A similar analysis can be done for any other country whose daily incidences are available.
Table 1: Projected Infections in Kenya
|95% Confidence Interval|
|Lower Limit||Upper Limit|
Young, Gifted and…Pregnant
The month of May is dedicated to preventing and ending teenage pregnancies worldwide. But as the month comes to an end, Kenya is still not close to achieving this goal.
One in every five Kenyan girls aged between 15-19 has had a live birth or is pregnant. It’s a mind-blowing statistic that speaks to the teenage pregnancy crisis in the country – the United Nations Population Fund estimates that there were about 380,000 cases in 2019 alone. Eighteen-year-old Patricia* (not her real name) was referred to me for legal advice, as she had one such pregnancy. Orphaned at an early age, her paternal uncle took her in but sexually abused her for several years. Today Patricia is 5 months pregnant and not in school, even though this should have been her final year. And while her uncle should be charged under the Sexual Offences Act – facing not less than 15 years in prison if convicted – Patricia will not testify against him for fear of losing the only financial support she has.
The month of May is dedicated to preventing and ending teenage pregnancies worldwide. But as the month comes to an end, Kenya is still not close to achieving this goal. Patricia is one of thousands of girls in Kenya stuck in a predicament caused by sexual violence, lack of information on, and access to youth-friendly sexual and reproductive health. For these girls, their education will be interrupted and their social and economic choices taken away from them.
But there are also increased health risks associated with teenage pregnancies, including physical health issues like convulsions, uterine infections and obstetric fistula – a hole in the birth canal, resulting in incontinence of urine or faeces that often affects women who give birth too young – and mental health challenges like depression and anxiety. And there are risks to the unborn child including premature birth, low birth weight and other neonatal conditions. Preventing teenage pregnancies is about protecting the holistic health of both the mother and the potential unborn child, and by extension, society as a whole.
The Kenya Demographic Health Survey 2014 reported a 2% drop in teenage pregnancies over a 20-year period. This was caused by major changes in girl’s education programmes and in the sexual and reproductive health and rights landscape in Kenya that made birth control and other services more accessible to teenage girls. Yet in 2014, the Kenyan Parliament shot down the Reproductive Health Care Bill sponsored by Senator Judith Sijeny, which suggested among other things, that adolescents be given unrestricted access to comprehensive sexual education and confidential sexual and reproductive health services. There was uproar around the bill, with Kenyans citing religious and cultural beliefs to reject it. But the facts betray this opposition: the same survey (KDHS) shows that about 11% of teenagers, nationwide are having sex before their 15th birthday. Kenya’s teenagers need better access to sexual and reproductive health services.
It’s not all doom and gloom though. In 2013, Kenya signed the Ministerial Commitment on Comprehensive Sexuality Education and Sexual and Reproductive Health Services for Adolescents and Young People in Eastern and Southern Africa. In 2015, the Ministry of Health enacted the National Adolescent Sexual and Reproductive Health Policy that aims to enhance the sexual and reproductive health status of adolescents in Kenya and contribute towards realization of their full potential in national development. Additionally, two months ago in March, Kenya through the National Council on Population Development (NCPD), launched the first-ever government-led multi-stakeholder campaign against teenage pregnancy dubbed ‘Let’s Act to End Teenage Pregnancy’.
But sex education is still not being uniformly delivered across the country. Teachers are not all adequately trained and can often pass misinformation onto the students. An African Population and Health Research Center (APHRC) study found that 1 in 4 secondary school students in Homa Bay, Mombasa and Nairobi counties thinks that using a condom during sexual activity is a sign of mistrust. The content of the curriculum is also heavily focused on content covering abstinence and sexually transmitted infections, ignoring other important topics like contraceptive use and access to safe abortion. Furthermore, a new Reproductive Health Care Bill (2019) threatens to negate the gains made on adolescent sexual and reproductive health and rights as it requires health providers to seek parental consent before providing adolescents with sexual and reproductive health services. Requiring parental consent is likely to result in an increase in unintended teenage pregnancy and unsafe abortions because teenagers may not want their parents to know about their sexual activities.
Ending teenage pregnancies will take a concerted effort of policy mixes. The judiciary must strictly implement the Sexual Offences Act. The legislature must review the issue of bride price, particularly, where teenage girls are concerned to de-incentives teenage marriages. Increased girls educational programs and opportunities created. Teachers must receive adequate training on comprehensive sexuality education. A wide range of sexual and reproductive health topics should be taught in the classroom but also parents and guardians must take the lead in providing their teenagers with correct and age appropriate information on sex. Lastly, the legislature must urgently amend Section 33(a) of the proposed reproductive health care law, to enable teenagers freely access quality, youth friendly sexual and reproductive health services. It’s time to bring down Kenya’s startling teenage pregnancy statistics.
Why China? A Look at Viral Outbreaks That, Like COVID-19, Originate From the East
China, officially the Peoples Republic of China (PRC), is a country in East Asia and is the most populous country in the world, with a population of around 1.4 billion people. It is also one of the world’s first civilizations.
With over 34,687 species of animals and plants, China is the third-most biodiverse country in the world after Brazil and Colombia. It is home to at least 551 species of mammals, 1221 species of birds and 424 species of reptiles and 333 species of amphibians; most of which are consumed as food.
On December 31 last year, Chinese authorities alerted the World Health Organization, WHO, of an outbreak of a novel strain of coronavirus causing severe illness. It was subsequently named SARS-CoV-2 and is now known as the causative agent of COVID-19. The origin of the virus was the city of Wuhan in China.
The disease, that has flu-like symptoms, has so far infected over 2 million people and caused over 140,000 deaths across 209 countries around the world. The effects it has left in its trail have caused different countries to take extreme measures in a bid to curb the spread of the virus.
This is, however, not the first time China has been the origin of a viral outbreak.
In February 1957, the Asian flu (H2N2) virus emerged in East Asia, triggering a pandemic. It was later traced back to China with a stop in Singapore. It then spread to Hong Kong and to coastal cities in the United States in the summer of 1957.
According to the Centers for Disease Control and Prevention, CDC, the number of deaths caused by the virus stands at 1.1 million people worldwide including 116,000 in the US. A vaccine was developed and the flu tapered off in 1958.
Though the cause is still not known, some authors believe the virus originated from a mutation in wild bucks combining with a pre-existing human strain. The strain later evolved, causing a milder pandemic between 1968-69.
The Asian flu was characterized by symptoms similar to many other strains of influenza, including fever, body aches, chills, cough, weakness, and loss of appetite. It is a respiratory illness, so a dry cough, sore throat, and difficulty breathing are all widely reported among flu sufferers. Other complications include pneumonia, seizures and heart failure.
Hong Kong Flu
The Hong Kong flu (H3N2) outbreak occurred in Hong Kong, China, between 1968-1969, killing an estimated 1 million people globally. It is said to have evolved from the H2N2 strain of influenza that had caused the Asian Flu.
It occurred in two waves, and in most places, the second wave caused more deaths that the first. A vaccine was later developed against the virus but it became available only after the pandemic had peaked in many countries.
Infection caused upper respiratory symptoms typical of influenza and produced symptoms of chills, fever and muscle pain and weakness. These symptoms usually persisted for between four and six days.
The H3N2 virus is still in circulation today and is considered to be a strain of seasonal influenza. In the 1990s, a closely related virus was isolated from pigs.
In 1997, human infections with Bird flu (H7N9) were first reported in China. It is a zoonotic disease (one that passes from an animal or insect to a human), which infects humans after exposure to infected poultry or contaminated environments. Rare instances of person-to-person spread were been identified in China.
Since then, annual sporadic infections have been reported outside of Mainland China, Hong Kong and Macao, but all the cases have occurred among people who had travelled to China before becoming ill.
The current risk to the general public’s health posed by the virus is low but exposure to infected poultry pauses the risk of it spreading to neighbouring countries. There have been 6 waves of the epidemic over the years with the last one being in 2017.
Early symptoms included fever, headache, coughing that produces sputum, muscle pain breathing problems and general malaise. In later stages, other symptoms include pneumonia, multi-organ dysfunction, septic shock and brain damage.
In 2002, a viral respiratory disease caused by a coronavirus called Severe Acute Respiratory Syndrome (SARS-CoV), was reported in Asia. It is thought to be an animal virus from an as-yet-uncertain animal reservoir, perhaps bats, that spread to other animals (civet cats) and first infected humans in the Guangdong province of Southern China.
According to National Foundation for Infectious Diseases, NFID, coronaviruses are a large group of viruses that cause diseases in animals and humans. They often circulate among camels, cats, and bats, and can sometimes evolve and infect people. They are named for the crown-like spikes on their surface.
Human coronaviruses were first identified in the mid-1960s. The CDC states that there are 7 coronaviruses that can infect people.
The SARS epidemic from China affected 26 countries and resulted in over 8000 infections in 2003. Some of the affected areas included Toronto in Canada, Hong Kong Special Administrative Region of China, Chinese Taipei, Singapore and Hanoi in Vietnam.
SARS also had influenza-like symptoms including fever, malaise, muscle pain, headache, diarrhoea, shivering, coughing (initially dry) and shortness of breathe. Severe cases often evolve rapidly, progressing to respiratory distress and requiring intensive care.
So Is China Fertile Ground For Future Pandemics?
Given the history above and the current situation the world is experiencing with the COVID-19 pandemic, what does China hold in terms of future outbreaks?
Dr Eddy Okoth Odari, a senior lecturer and researcher of Medical Virology in the Department of Medical Microbiology at the Jomo Kenyatta University of Agriculture and Technology (JKUAT), points out several factors.
“Potential for a pandemic would depend on various socio-economic and geopolitical factors attributed to a country or region. Most pandemics that have emanated from China have been viral in nature and have occurred as a result of such viruses crossing species from animals to humans. Viruses’ crossing from animals to humans is not a strange phenomenon. However, we have to appreciate that most of these viruses, which eventually end up in pandemics, have been traced to the “Wildlife Markets” (wet markets) in Southern China. The activity of trading in wildlife is unique to that region. China being an economic hub where a lot of businesses take place, many people travel to and out of China and therefore I would imagine that any outbreak occurring in China would easily and quickly spread to other regions compared to if such an outbreak would occur for example in an African country.”
In late January, China imposed a ban on trade and consumption of wildlife meat acquired through illegal trading activities, as cases of COVID-19 surged in Wuhan. The city of Shenzen went a step further to extend the ban on cats and dogs. This new law will be enforced on 1st May.
There have been 81,802 cases, 3,333 deaths and 77,279 recoveries since the outbreak (see our tracker for the most up to date numbers), numbers whose veracity continues to be heavily criticized after Chinese authorities reportedly suppressed the news of the outbreak when it first began.
However, for the first time since January, Wuhan reported no new deaths on April 7, joining the rest of China, which has reportedly seen no deaths since March – even though questions have been raised about the veracity of China’s claims. This sharp decline has been attributed to aggressive testing, quarantines and social distancing. Authorities have begun to ease restrictions on lockdowns though still taking precautions to fully resume normalcy in the country.
As to what the future of pandemics holds, Dr Okoth says it is not that easy to tell.
“It may not be possible to predict where a future pandemic may come from, but it is worth assessing such socio-economic and geopolitical factors when trying to generate a model to predict future pandemics.”
He, however, has a warning for African countries.
“Although so far tropical Africa is not recording very high cases as compared to the temperate regions, seasonal variations may work against us. For example, the cold season starting in June through to the end of July (in the case of Kenya) and other southern African countries may make these regions become the epicentres of infections (if not controlled in time) in the coming months.”
This article was originally published by Africa Uncensored. Graphics by Clement Kumalija.
COVID-19: Echoes of the 20th Century in a 21st Century Pandemic
In modern history, the most notable major pandemic was the Spanish Flu of 1918-1919. Over a century later, the world is grappling with the effects of the ongoing COVID-19 pandemic that has currently infected over 2 million people and killed over 140,000.
Diseases have plagued mankind throughout history. The Neolithic Revolution, which was marked by a shift to agrarian societies, preceded by hunting and gathering communities, brought about increased trading activities. The shift created new opportunities for increased human and animal interactions, which in turn, introduced and sped up the spread of new diseases. The more civilized humans became, the more the occurrences of pandemics was witnessed.
This led to outbreaks that left an indelible mark in history due to their severity. Three of the deadliest pandemics include the Plague of Justinian (541-542 BC) that killed about 30-50 million people, Black Death (1347-1351) that killed 200 million and Smallpox (1520 onwards) that killed 56 million.
In modern history, the most notable major pandemic was the Spanish Flu of 1918-1919. Over a century later, the world is grappling with the effects of the ongoing COVID-19 pandemic that has currently infected over 2 million people and killed over 140,000.
But how does the Spanish flu compare to the current COVID-19 pandemic?
The mother of all flu pandemics in modern history
The Spanish flu pandemic of 1918 is sometimes referred to as the mother of all pandemics. It affected one-third of the world’s population and killed up to 50 million people, including some 675,000 Americans. It was the first known pandemic to involve the H1N1 virus.
The outbreak occurred during the final months of World War I. It came in several waves but its origin, however, is still a matter of debate to-date. Its name doesn’t necessarily mean it came from Spain.
Spain was one of the earliest countries where the epidemic was identified. Historians believe this was likely a result of wartime media censorship. The country was a neutral nation during the war and did not enforce strict censorship on its press. This freedom of the press allowed them to freely publish early accounts of the illness. As a result, people falsely believed the illness was specific to Spain and hence earning the name “Spanish flu”.
Influenza or flu is a virus that attacks the respiratory system and is highly contagious.
Initial symptoms of the Spanish flu included a sore head and tiredness, followed by a dry hacking cough, loss of appetite, stomach problems and excessive sweating. As it progressed, the illness could affect the respiratory organs, and pneumonia could develop. This stage was often the main cause of death. This also explains why it is difficult to determine exact numbers killed by the flu, as the listed cause of death was often something other than the flu.
These symptoms are very similar to those of the ongoing COVID-19 pandemic.
For decades, the Spanish flu virus was lost to history and scientists still do not know for sure where the virus originated. Several theories as to what may have caused it point to France, the United States or China.
Research published in 1999 by a British team, led by virologist John Oxford theorized a major United Kingdom staging and hospital camp in Étaples, France as being the centre of the flu. In late 1917, military pathologists reported the onset of a new disease with high mortality in the overcrowded camp that they later recognized as the flu. The camp was also home to a piggery, and poultry was regularly brought for food from neighbouring villages. Oxford and his team theorized that a significant precursor virus harboured in birds, mutated and then migrated to the pigs.
Other statements have been that the flu originated from the United States, in Kansas. In 2018, another study found evidence against the flu originating from Kansas, as the cases and deaths there were fewer than those in New York City in the same period. The study did, however, find evidence suggesting that the virus may have been of North American Origin, though it wasn’t conclusive.
Multiple studies have placed the origin of the flu in China. The country had lower rates of flu mortality, which may have been due to an already acquired immunity possessed by the population. The argument was that the virus was imported to Europe via infected Chinese and Southeast Asian soldiers and workers headed across the Atlantic.
However, the Chinese Medical Association Journal published a report in 2016 with evidence that the 1918 virus had been circulating in the European armies for months and possibly years before the Spanish flu pandemic.
COVID-19, on the other hand, was first discovered in the Wuhan province of China late last year. There has been no argument against this so far. Research is still ongoing as to whether it was passed on from bats or the newly found connection to pangolins.
Much like COVID-19, the Spanish flu was spread from through air droplets, when an infected person sneezed or coughed, releasing more than half a million-virus particles that came into contact with uninfected people.
The close quarters and massive troop movements during the war hastened the spread of the flu. There are speculations that the soldiers’ already weakened immune systems were increasingly made vulnerable due to malnourishment and the stresses of combat and chemical attacks. More U.S soldiers in WW1 died from the flu than from the war.
A unique characteristic of the virus was the high death rate it caused among healthy adults 15-34 years of age. It lowered the average life expectancy in the U.S by more than 12 years.
COVID-19, on the other hand, does not discriminate in terms of age, but older people and those with other underlying medical conditions are being considered more vulnerable.
The measures being taken today to curb the spread of COVID-19 are very similar to those taken in 1918. Back then, physicians advised people to avoid crowded places and shaking hands with other people. Others suggested remedies included eating cinnamon, drinking wine and drinking Oxo’s beef broth. They also told people to keep their mouths and noses covered with masks in public.
In other areas quarantines were imposed and public places such as schools, theatres and churches were closed. Libraries stopped lending books and strict sanitary measures were passed to make spitting in the streets illegal.
Due to World War I, there was a shortage of doctors in some areas. Many of the physicians who were left became ill themselves. Schools and other buildings were turned into makeshift hospitals, where medical students had to step up to help the overwhelmed physicians.
Though the severity of COVID-19 has not gotten to the level of the Spanish flu, most of the effects the world is experiencing now are very relatable.
The Spanish flu killed with reckless abandon, leaving bodies piled up to such an extent that funeral parlours and cemeteries were overwhelmed. Family members were left to dig graves for their deceased loved ones. Strained state and local health centres also closed, hampering efforts to chronicle the spread of the flu and provide much-needed information to the public. Similar scenes are being witnessed in Italy today, which has so far recorded the highest number of deaths due to COVID-19.
The Spanish flu also adversely affected the economy as the deaths created a shortage of farmworkers, which in turn affected the summer harvest. A lack of staff and resources put other basic services such as waste collection and mail delivery under pressure. COVID-19 has seen some companies send their employees home on unpaid leave and others have imposed pay cuts. If the situation worsens, a majority is likely to lose their jobs.
Fake news during this time was also a problem. Even as people were dying, there were attempts to make money by advertising fake cures to desperate victims. On June 28, 1918, a public notice appeared in the British papers advising people of the symptoms of the flu. It however turned out this was actually an advertisement for Formamints, a tablet made and sold by a vitamin company. The advert stated that the mints were the “best means of preventing the infective processes” and that everyone, including children, should suck four or five of these tablets a day until they felt better.
Fake news has been a concern since the outbreak of COVID-19, with the Internet making it even easier to spread it. See some of our fact checks on the subject here.
The deadliness of WW1 coupled with censorship of the press and poor record-keeping made tracking and reporting on the virus very tedious. This explains why the flu remains of interest to date as some questions are yet to be answered. In contrast, Media coverage on COVID-19 has been commendable and very useful to the public in providing much-needed answers.
When the Spanish flu hit, medical technology and countermeasures were limited or non-existent at the time. No diagnostic tests or influenza vaccines existed. The federal government also lacked a centralized role in helping to plan and initiate interventions during the pandemic.
Many doctors prescribed medication that they felt would be effective in alleviating symptoms, including aspirin. Patients were advised to take up to 30 grams per day, a dose now known to be toxic. It is now believed that some of the deaths were actually caused or hastened by aspirin poisoning.
The first licensed flu vaccine appeared in America in the 1940s and from there on, manufacturers could routinely produce vaccines that would help control and prevent future pandemics.
Fast forward to 2020; clinical trials of COVID-19 treatments/vaccines are either ongoing or recruiting patients. The drugs being tested range from repurposed flu treatments to failed Ebola drugs, blood pressure drug (Losartan), an immunosuppressant (Actemra- an arthritis drug) and malaria treatments developed decades ago.
An antiviral drug called Favipiravir or Avigan, developed by Fujifilm Toyama Chemical in Japan is showing promising outcomes in treating at least mild to moderate cases of COVID-19.
As of now, doctors are using available drugs and health support systems such us ventilators to alleviate symptoms. There have been over 500,000 recoveries so far.
Doctors in China, South Korea, France and the U.S. have been using Chloroquine and hydroxychloroquine on some patients with promising results. The FDA is organizing a formal clinical trial of the drug, which has already been approved for the treatment of malaria, lupus and rheumatoid arthritis.
The mistakes and delays in taking quick action we are experiencing today with COVID-19 are not new. In the summer of 1918, a second wave of the Spanish flu returned to the American shores as infected soldiers came back home. With no vaccine available, it was the responsibility of the local authorities to come up with plans to protect the public, at a time when they were under pressure to appear patriotic and with a censored media downplaying the disease’s spread.
Some bad decisions were made in the process. In Philadelphia for instance, the response came in too little too late. The then director of Public Health and Charities for the city, Dr Wilmer Krusen, insisted that the increasing fatalities were not the Spanish flu but the normal flu. This left 15,000 dead and another 200,000 sick. Only then did the city close down public places.
The End Of the Pandemic
The pandemic came to an end by the end of the summer of 1919. Those who were infected either died or developed immunity. The world has experienced other flu outbreaks since then but none as deadly as the Spanish flu.
The Asian flu (H2N2), first Identified in China from 1957-1958, killed around 2 million people worldwide. The Hong Kong (H3N2), first detected in Hong Kong, from 1968-1969, killed about 1 million people. Between 1997-2003, Bird flu (H5N1), first detected in Hong Kong, killed over 300 people. More recently in 2009-2010, the Swine flu (H1N1), which originated from Mexico, killed over 18,000 people.
The world’s population has increased from 1.8 billion to 7.7 billion since 1918. Animals alike, which are used for food, have also increased significantly, giving room for more hosts for novel flu viruses to infect people. Transport systems have gotten better making global movement of people and goods much easier and faster, further widening the spread of viruses to other geographical regions.
Even though considerable medical, technological and societal advancements have been made since 1918, the best defence against the current pandemic continues to be the development of vaccine or herd immunity. The biggest challenge, however, is the time required to manufacture a new vaccine. According to the Centers for Disease Control and Prevention, CDC, it generally takes about 20 weeks to select and manufacture a new vaccine.
Dr Eddy Okoth Odari, a senior lecturer and researcher of Medical Virology in the Department of Medical Microbiology at the Jomo Kenyatta University of Agriculture and Technology breaks it down as follows:
“It is anticipated that “herd immunity” would protect the vulnerable groups. We must, however, appreciate that natural “herd immunity” may only occur when a sizeable number of the population gets infected. I note with concern that we may not know and should not gamble with the immunity or health of our populations. This would then call for an “induced herd immunity” through vaccination. Therefore as at now, we must increase our efforts in developing an effective vaccine.”
The World Health Organization (WHO) published instructions for countries to use in developing their own national pandemic plans, as well as a checklist for pandemic influenza risk and impact management. But even with all these plans, there are still loopholes that could still be devastating in the face of a pandemic, as we are currently witnessing.
Healthcare systems are getting overwhelmed and some hospitals and doctors are struggling to meet the demand from the number of patients requiring care. The manufacture and distribution of medications, products and life-saving medical equipment such as ventilators, masks and gloves have also significantly increased, seeing as there is already a shortage being experienced. Dr Okoth has a good explanation for this:
“Translation of research findings into proper policies has been slow since policy formulators have insisted on evidence. For example, as early as March 2019, publications had hinted into a possibility of a virus crossing over from bats to human populations in China, but unfortunately, there was no proper preparedness and if any, perhaps the magnitude of this potential infection was underestimated. Finally, the geopolitical wars and political inclinations among the superpowers are not helping much in the war against infectious diseases. When the pandemic started it was viewed as a Chinese problem, in fact, other nations insisted in it being called a “Chinese virus” or “Wuhan virus”. Even with clear evidence that the virus would spread outside China, the WHO (perhaps to appear neutral) insisted that China was containing the virus and delayed in declaring this a pandemic – the net result of this was that other countries became reluctant in upscaling their public health measures, yet other countries seem to have been keen not to be on the bad books of China.”
There is no telling how long the ongoing COVID-19 pandemic will go on for or when and how it will end, but global preparation for pandemics clearly still warrant improvement as Dr Okoth advises.
“Perhaps the lessons that we learn here is that diseases will not need permission to cross borders and since the world has become a global village, there should be proper investments in global health and scientific research.”
This article was originally published by Africa Uncensored. Graphics by Clement Kumalija.
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