A serological survey of around 5,000 people from different parts of the city of Ahmedabad in Gujarat found that 81.63% of the sampled population had developed antibodies to COVID-19, officials said on Monday.
People who took both doses of the coronavirus vaccine had high levels of HIV infection compared to those who had not yet been inoculated, they said, citing the results of the recent investigation.
The investigation to detect seropositivity of antibodies against SARS-CoV2, which causes COVID-19, was conducted by the Ahmedabad Municipal Corporation (AMC) between May 28 and June 3, when the second wave of the pandemic calmed down.
Seropositivity essentially means the presence of antibodies in the blood serum.
” We perform serosurveillance studies at regular intervals to detect antibodies. Overall, 80% seropositivity was detected in the general population of Ahmedabad. Those who took both doses had high levels of seropositivity compared to those who took none, ”said AMC Medical Officer of Health Dr Bhavin Solanki.
A total of 5,001 samples were collected as part of the study, of which 32 samples were rejected for various reasons and results were available for 4,969 samples – 2,354 males and 2,615 females, he said. .
Of these, 4,056 samples tested positive for antibodies against SARS-CoV-2, giving a positivity of 81.63 percent, according to a report from the CMA.
A total of 1,938 men demonstrated the presence of antibodies, giving a positivity of 82.33 percent, while 2,118 women, or 80.99 percent, had antibodies. Thus, seropositivity is higher in men than in women, ”the report states.
The report states that more than 80% of the population had antibodies to COVID-19 due to their past infection, vaccination, or both.
Of the total of 2,887 people in the sample size who had no history of coronavirus infection and were not yet vaccinated, antibodies were found in 2,216 people, representing 76 , 76%, the lowest of the entire sample.
On the flip side, out of 158 people who have both had COVID-19 in the past and took two doses of the vaccine, 154 people, or 97.47%, had antibodies, according to the report.
Additionally, antibodies were found in 164 people out of a total of 173 (94.80 pc), who had COVID-19 in the past but had only taken a single dose of the vaccine (when the investigation was in progress), he said.
Among the unvaccinated, those who were infected with COVID-19 had a higher seropositivity (81.93%) than those without any history of viral illness (76.76 pc), according to the report.
Among those vaccinated as well, those infected with COVID-19 had a higher seropositivity than those without a history of respiratory illness, he said.
Even for these two groups, individuals with two doses of the vaccine had a higher seropositivity than those with a single dose, he said.
A majority of the vaccinated population in our sample was vaccinated with the Covishield vaccine. Although there are very few who were vaccinated with Covaxin in our sample, people with Covaxin have a slightly higher seropositivity compared to Covishield, ” the survey said.
” Considering the dose of vaccine received, those who received no vaccine dose were 77.04 percent seropositive, those with one dose had 86.06 percent seropositivity, while those with 2 doses of vaccine are 94.22 percent seropositive. So, seropositivity increases as the dose of COVID-19 vaccine increases, ”the report said.
As of May 2021, the study estimated that SARS-CoV2 antibody seropositivity was 81.63% in the general population of Ahmedabad, she said.
There is insufficient data “to comment on the state of collective immunity for the whole city,” according to the report.
“Looking at higher seropositivity among vaccinated and higher seropositivity with the completion of both doses, large-scale COVID-19 vaccination for the remaining and incompletely vaccinated population is strongly recommended for complete control of the pandemic situation.” , indicates the report. PTI PJT PD RSY RSY
(This story was not edited by Devdiscourse staff and is auto-generated from a syndicated feed.)