a study made for 614 workers from Health completely vaccinated on India i found one “significant” decline in them antibodies who fights covid-19 inside four months later first injection.
Findings can help indian government decide whether to provide booster dose as western countries do.
According to the director of a government institute that conducted the study, the reduction in antibodies does not mean that the vaccinated people lose their ability to fight the disease, as the body’s memory cells may continue to provide significant protection.
Six months from now we will be able to tell them more clearly if and when a booster will be needed, Sanghamitra Pati of the Regional Medical Research Center in the eastern city of Bhubaneswar said on Tuesday.
And we will encourage similar work in different areas to get data from all over India,” the official added.
British researchers reported last month that the protection afforded by two doses of the Pfizer/BioNTech and AstraZeneca vaccines began to wane after six months.
The India study, published on the Research Square prepress platform but not yet peer-reviewed, is one of the first to be conducted in the country with two main vaccines: Covishield, a licensed version of the AstraZeneca injection, and Covaxin for national development.
Health officials say the priority is to fully vaccinate India’s 944 million adults as they examine the evolution of science at booster doses.
Of these, more than 60% received at least one dose and 19% had already received the two required doses.
Covid-19 cases and deaths in India have dropped significantly from the peak of over 400,000 infections in early May.
India reported 33.29 million cases and 443,213 deaths in total.