ADDIS ABABA – African countries need to continue rolling-out the AstraZeneca/Oxford COVID-19 vaccine as part of their vaccination campaigns against Covid-19 disease, Africa Union’s disease prevention agency said.
Africa confirmed COVID-19 about 4.2mln infections while the disease took more than 110, 000 lives in Africa.
Officials of Africa Centers for Disease Control and Prevention (Africa CDC) reiterated their faith in the AstraZeneca vaccine, especially in preventing severe COVID-19 cases and related deaths.
Reports say the confidence in the COVID-19 vaccine on the ground to be shaky.
This fragile confidence has recently been dealt a worrying blow by the European governments’ decision to suspend the AstraZeneca vaccine.
Africa CDC, however, sticks with its position and said vaccination remains a strategic approach despite concerns about adverse impact of AstraZeneca.
“From the evidence available…, Africa CDC concluded that the benefits accruable from the AstraZeneca COVID-19, continue to outweigh its risks,” the agency said on Friday.
On 15 February 2021, the World Health Organization listed the AstraZeneca vaccine for both emergency use and distribution via the COVAX facility.
The African Regulatory Task-force subsequently endorsed the WHO emergency use listing for this vaccine and the first shipments to Africa were initiated from the COVAX facility, with Ghana receiving the first consignment.
On 10 March 2021, the European Medicines Agency announced that four European countries suspended the use of the AstraZeneca COVID-19 vaccine following reports of blood clots and bleeding disorders from Austria.
Similar events were reported by additional European member states during this time and by 15 March 2021, six countries suspended the use of the AstraZeneca vaccine, 11 countries paused their AstraZeneca vaccination campaigns entirely regardless of batch, while three countries indicated that they will continue use of the vaccine.
What do these reports mean?
According to Africa CDC, reporting of adverse events following immunization is part of the routine monitoring system put in place to ensure that vaccines remain safe and are being safely administered.
The adverse events reported from Europe are not listed as side effects associated with the AstraZeneca vaccine.
To date, there has been no causal link established between the administration of the vaccine and the events reported.
Most importantly, the number of blood clots and bleeding disorders reported is no more than would normally occur in the population.
As a precautionary measure, some European member States have opted to either suspend use of the specific vaccine batch concerned, or to pause their vaccination campaigns with the AstraZeneca vaccine entirely as investigations are ongoing.
European Medicines Agency’s position
In a statement issued on March 16, the European Medicines Agency (EMA) said its Pharmacovigilance Risk Assessment Committee (PRAC) is reviewing all reports of thromboembolic events occurring post vaccination.
As of the 10th of March 2021, 30 thromboembolic events have been reported among more than 5 million people vaccinated with the AstraZeneca COVID-19 vaccine in the EU.
This number of thromboembolic events is no higher than what is seen in the general population in absence of the vaccine.
Accordingly, the PRAC position is that the vaccine’s benefits continue to outweigh the risks and the vaccine can continue to be administered while investigations are ongoing.
The PRAC will conclude its investigations and advise on any further actions needed during an extraordinary meeting scheduled for the 18 March 2021.
WHO: ‘Vaccine outweigh its risks’
On the 17th of March 2021,7 the World Health Organization (WHO) indicated that its Global Advisory Committee is carefully assessing the latest safety data regarding the AstraZeneca vaccine.
The WHO reiterated the EMA position that the benefits of the AstraZeneca vaccine outweigh its risks and recommends that vaccination campaigns continue.
Manufacturer defends its vaccine
On the 14th of March 2021, the manufacturer of the vaccine, AstraZeneca, noted it had undertaken a review of available safety data of more than 17 million people vaccinated in the European Union and United Kingdom.
It said found no evidence of an increased risk of pulmonary embolism, deep vein thrombosis, or thrombocytopenia in any defined age group, gender, batch or country.
Furthermore, during clinical trials, the number of thrombotic events was small, and was lower in those receiving the vaccine as compared to those who did not, it said, adding that there has also been no evidence of increased bleeding in over 60,000 participants enrolled.
According to AstraZeneca, more than 60 quality tests were conducted by AstraZeneca and over 20 independent testing laboratories during production of the vaccine.
There have been no confirmed issues related to any batch of the vaccine used in Europe, or the rest of the world, it added.
Use of the Vaccine in Africa
Africa is facing significant challenges in securing access to the COVID-19 vaccines needed to achieve its goal of vaccinating at least 60% of the continent’s population.
As of 15 March 2021, 23.6 million doses of vaccine had been distributed on the continent. This corresponds to a continental coverage of only 1.7%.
The AstraZeneca vaccine, allocated principally via the COVAX facility, accounts for 20.5 million (87%) doses and is the main vaccine used in Africa.
Africa CDC’s Advice
COVID-19 vaccines remain a strategic approach for the prevention of severe cases of and COVID-19 related deaths, according to Africa CDC.
“Africa CDC encourages AU member States to facilitate rapid access to safe and effective vaccines that reduce COVID-19 severity and COVID-19 related hospitalizations,” it added.
This is strategic for the control of the epidemic and the rapid return of the growth and development of the continent, the Agency said.
On Tuesday, Africa CDC called for a special session of the African Task-force for Coronavirus (AFTCOR), which includes experts from across Africa and the world, to review the AstraZeneca situation.
“From the evidence available and discussed during the AFTCOR special session, Africa CDC concluded that the benefits accruable from the AstraZeneca COVID-19, continue to outweigh its risks,” it said.
Africa CDC has also recommended AU Member States continue to roll-out the AstraZeneca vaccine as part of their vaccination campaigns.
It also advised the states “ensure the routine monitoring, reporting and evaluation of Adverse Events Following Immunization”.
Africa CDC will continue to monitor the adverse events following immunization with all the COVID-19 vaccines and provide evidence-based recommendations as the situation evolves, the agency pledged.