Mixing Covid-19 Vaccines: Induced Immune Response Is Better

At a time when a vaccine seems to be a way to remedy the impact of Covid-19 pandemic on the population, many seem to be asking if they can mix Covid-19 vaccines in a bid to build their body immunity against the virus. In the midst of such dilemma, the World Health Organisation (W.H.O) has made interim recommendations for mixing and matching Covid-19 vaccines from different manufacturers for both the second dose and booster shots.
According to the global health body, this depends on the availability of the messenger RNA (mRNA) vaccines which teaches cells how to make a protein that will trigger an immune response inside the body. Some are such vaccines are those developed by Pfizer Inc (PFE.N) and Moderna Inc (MRNA.O). The health organ says they can be used as subsequent doses after initial doses of AstraZeneca's (AZN.L) vectored vaccine and vice versa.
AstraZeneca and any of the mRNA vaccines can also be used after initial doses of Sinopharm's inactivated vaccine, WHO said. The guidance has been developed based on advice from W.H.O's Strategic Advisory Group of Experts on vaccines. The expert group reveals that viral vector vaccines contain instructions for making Coronavirus antigens, while mRNA vaccines use a code from SARS-CoV-2, the Coronavirus that causes Covid-19, to prompt an immune response in recipients. Inactivated vaccines take the SARS-CoV-2 virus and inactivate or kill it using chemicals, heat or radiation.
Information also reveals that the recommendation comes after recent study...