-The Hindu Antibody prevalence data derived from serosurveys must be interpreted with caution and correction factors The theory behind population-based serological surveys (seroprevalence surveys or serosurveys) to detect the prevalence of antibodies against  COVID-19 is robust. Their purpose is to measure the proportion of a population already infected, as evidenced by antibody positivity. When applied on a national scale, a random sample of the entire population is tested. Then, the data are...

-The Hindu Chennai: It is the only State which goes entirely by RT-PCR testing, says Health Secretary Nearly nine months after it started testing samples for COVID-19, Tamil Nadu on Sunday hit the milestone of one crore tests using RT-PCR kits. “Tamil Nadu is the only State which goes entirely by RT-PCR testing. With laboratories in all districts, the State’s capacity is over one lakh tests per day,” Health Secretary J. Radhakrishnan said. With...

-The Hindu Low level of RT-PCR re-testing in persons who are testing antigen negative will underestimate cases, says COVID-19 task force member Only 1 in 200 of those who tested negative in an antigen test in Delhi to detect possible coronavirus cases were re-tested, a fraction that epidemiologists say is too low given what is known about the disease. From June 25, daily cases appear to have peaked at 3,390 and steadily...

-Outlook India Eminent epidemiologist and health economist Dr Ramanan Laxminarayan tells Outlook in an exclusive interview why rapid Covid Antigen Tests are problematic and should not, in any case, replace the existing RT-PCR tests. While the Delhi government's data on Coronavirus cases shows a decline in the number of positive cases, experts believe that the real picture might not be what it looks like. Eminent epidemiologist Dr Ramanan Laxminarayan, who is also...

-The Indian Express Over 1,800 people have been affected by the virus, according to the municipal corporation’s last report. Overnight showers in the capital has prompted the Union health ministry to issue an advisory to the Delhi government on Saturday to “intensify” measures to check mosquito-breeding, while warning of a further spike in dengue cases. The advisory stated, “In view of further rain predicted by the weather department, there is a possibility of...