-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...

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