This isn’t only because developed countries, like those in Western Europe, had purchased a large number of AstraZeneca doses to dig their way out of the pandemic but, more consequentially, because so much of the developing world was relying on this one vaccine to do the same.
The double blow is that a picture is emerging that the AstraZeneca vaccine — which appears to have caused a very rare, sometimes fatal, condition of severe clotting with low blood platelet counts — may be affecting younger adults more than the elderly. Developing countries, in general, have significantly younger populations than their wealthier counterparts.
A link between the rare blood clots and J&J’s vaccine has not been officially confirmed, but US officials want to pause it and use alternative shots while they work out if there is indeed a connection, and if so, how prevalent it might be. Europe is waiting to see what an investigation finds.
Many developing nations are having to wait longer than wealthier countries to receive these vaccines. In earlier stages of their development, mRNA vaccines needed to be kept at such cold temperatures, most developing nations couldn’t use them without purchasing new, expensive equipment to store them. Those requirements are improving — the Pfizer vaccine can now be stored at normal freezer temperatures when being transported — but the storage challenge months ago meant that most developing countries focused on shots like AstraZeneca and J&J when making purchase agreements with drug companies.
Dr. Peter Drobac, Director of the Skoll Centre for Social Entrepreneurship at Oxford Saïd Business School, said that despite the rarity of the blood clots in both AstraZeneca and Johnson & Johnson’s vaccines, any adverse effects could worsen vaccine hesitancy and even misinformation.
“It may fuel conspiracy theories around the world about a two-tiered society. If wealthy countries say they are only going to have ‘gold standard’ with the most expensive vaccines and then say AstraZeneca is not good enough for us in the global north, but it is good enough for the global south, it could reduce uptake of the vaccine and hamper efforts to vaccinate the world,” he told CNN.
“For the Covid-19 vaccines, the benefits outweigh the potential side effects,” Benjamin Djoudalbaye, the head of Policy, Health Diplomacy and Communication at Africa CDC, told CNN on Monday.
But the picture is more nuanced than that. The United Kingdom has data to suggest that while the benefits outweigh the risks overall, they don’t necessarily do so for every age group in every circumstance.
Last week, its medicines regulator advised people under the age of 30 be offered alternative vaccines, arguing that people in that age group are more likely to suffer serious harm from the AstraZeneca vaccine than they were likely to avoid getting very seriously ill. That’s only in a situation where exposure to the virus is low. Any return to “normal” will increase exposure. Other European countries and Australia have limited the use of the vaccine in older age groups.
So far COVAX has delivered 17.4 million Covid-19 vaccines to 36 African countries, including more than 17 million AstraZeneca shots, manufactured by the Serum Institute of India, and around 200,000 Pfizer vaccine doses, according to figures sent to CNN on Wednesday by WHO officials.
The extent of the risk of these rare blood clot events after vaccination from AstraZeneca and, potentially, J&J vaccines is still unclear, but if it is confirmed that younger people are more likely to experience them, that means the developing world and its younger populations will be more vulnerable to clots, even if they are less vulnerable to Covid-19 to begin with.
Meanwhile, countries like the United States and the United Kingdom are steaming ahead with their vaccine programs and are sharing very few doses with other countries in need.
The US has shared a small number of the AstraZeneca vaccine, which hasn’t yet been approved there, with neighboring Mexico and Canada, but says it won’t share more widely until its own supplies are secure. A Duke University report on Thursday estimates the US could have 300 million excess doses by the end of July.
A Nigerian physician and public health consultant, Kingsley Douglas, said the “protectionist” tendencies of the developed world were working against a positive global outcome.
“Western countries are looking out for their citizens first before looking elsewhere. I do not begrudge them for being protectionist in their approach,” Douglas told CNN. “Nonetheless, it is in the interest of everyone that the critical mass of the world’s population gets vaccinated and protected against Covid. Vaccines should be uniformly and equitably distributed.”
A top Chinese health official admitted over the weekend that China’s vaccines didn’t have very high efficacy rates and that Beijing was considering acquiring the new types of vaccines based on the mRNA technology — such as the Pfizer and Moderna shots — an analysis he was forced to water down after his comments were shared widely on social media and international news websites.
Samuel Matsikure, a resident in the Zimbabwean capital Harare, said he has heard a lot of young people express skepticism over the Chinese-made vaccines.
“Many citizens are afraid to get vaccinated,” he told CNN. “They’re not trusting the vaccine from China — partly because they consider its efficacy to be low — and it’s not as popular as other vaccines. So you find that the young and able-bodied people are not getting vaccinated as much as older persons,” Matsikure said.
Matsikure hopes that Zimbabwe will acquire more vaccines so that some of the country’s stringent coronavirus-related restrictions can be relaxed.
“Many Zimbabweans have suffered economically due to Covid lockdowns. The majority of Zimbabweans are in the informal sector … they rely on selling their products on the streets or designated selling places. But all these were shut down during the lockdowns. Many are currently unemployed…crying for food support and unable to pay their rents,” Matsikure told CNN.
Brazil, for example, has already received over 1 million AstraZeneca doses through COVAX, and as cases soar there, it doesn’t appear to be moving toward any limited use.
“The blood clots are worrying,” said Sergio Litewka from the University of Miami Ethics Programs, who focuses his research on Latin America. “But I don’t think the quantity of cases of blood clots warrants the suspension of the vaccine’s use.”
He said that countries in Latin America simply don’t have enough other options to drop shots like AstraZeneca and J&J, and believes that vaccine hesitancy in the region could rise as a result.
“Denmark has said no to AstraZeneca and there are other countries that are studying what they are going to do and it’s the same with Johnson & Johnson,” he said. “But in Latin America, people have very few options. Some say I would rather take the risk but some are more hesitant.”
CNN’s Christopher Johnson contributed to this report.