Published on March 26, 2021

Ahmedabad: The first seropositivity survey in Ahmedabad district revealed that the overall prevalence of antibodies – both IgG and IgM –was about 25% in the 2,301 samples taken in three categories.
The result was part of the paper ‘Population based Seroprevalence of SARS-CoV-2 Specific IgG Antibodies in Rural Ahmedabad – A Case Control Study’ by DDO (Ahmedabad) Arun Mahesh Babu and Deputy CDHO (Ahmedabad) Shilpa Yadav. It was published in International Journal of Science and Research (IJSR) recently.

The survey carried out in December included patients who tested positive in July, August, and September, relatives of the confirmed positive patients, and general population (RT-PCR negative).

“There is no statistically significant difference between men and women in terms of seropositivity. Analysis of area-wise cases show that the concentration is more around areas close to urban pockets,” said the DDO. He added that they wish to convey to people of the district that ‘herd immunity’ has not been achieved yet, and following Covid-19 safety protocols and getting vaccinated is the way forward to ensure safety of self and others.

Dr Shilpa Yadav said that 46% of those who had recovered from Covid-19 infection were found to have antibodies.

“Respective seropositivity surveys have revealed that the community is not developing immunity against corona,” said a top AMC official.

https://timesofindia.indiatimes.com/city/ahmedabad/herd-immunity-elusive-reveal-surveys/articleshow/81695055.cms

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