As per the findings of the study unveiled on June 22, Covid-19 antibody developed in 71% people in Dhaka and 55% in Chittagong while the overall 68% of people studied had the coronavirus antibody developed in their blood. Uncertainty over Covid-19 herd immunity"No one, including the WHO, still can surely say whether herd immunity for the Covid-19 is possible. We know herd immunity for Measles, Polio, cholera and other diseases, but no one knows about it regarding the Covid-19," said Dr Rubhana. So, we can't say the population in Dhaka is going to attain herd immunity," the scientist observed. Vaccination may require every yearRubhana said it may not be possible now to get herd immunity against Covid-19.

Source: Dhaka Tribune July 02, 2021 12:22 UTC