How COVID-19 vaccines work – NPHCDA




Dr. Faisal Shuaib, Executive Director, National Primary Care Development Agency (NPHCDA) given an insight into the composition of COVID-19 vaccines.

an interview News Agency of Nigeria(NAN) on Abuja, Shuaib said there were several COVID-19 vaccine .

He said while some had been approved for emergency use Organisation (WHO), others were still different phases of clinical trials for possible approval.

According to him, COVID-19 vaccine are of various categories based on their mechanism of action such as the inactivated or weakened virus vaccines.

He explained that formulating the COVID-19 vaccine, an inactivated or weakened virus is used so it does not cause disease, but generates an immune .

He also said there were protein-based vaccines, which used harmless fragments of proteins or protein shells that mimic the COVID-19 virus to safely generate an immune .

He added that the viral vector vaccines used a virus that had been genetically engineered so that it could not cause a disease but would produce coronavirus proteins to safely generate an immune .

He added that the Ribonucleic Acid (RNA) and Deoxyribonucleic Acid (DNA) vaccines employed a cutting-edge approach that used genetically engineered RNA or DNA to generate a protein that safely prompted an immune response.

NAN reports that 1.09 million Nigerians have been administered the first dose of the Astrazeneca vaccine. (NAN)