Study Documents Asymptomatic Re-Infection of by a Different Strain of COVID-19 in Hospital Workers

From Nature:

Two staff members at a hospital in India who tested positive for the new coronavirus became reinfected several months later — and had no symptoms in either instance.

…Genomic analysis by Vinod Scaria at the Institute of Genomics and Integrative Biology in New Delhi and his colleagues showed that the SARS-CoV-2 that infected the workers the second time was genetically different from the first virus that infected them — evidence that the workers were infected anew rather than harbouring leftover virus.

The results suggest that asymptomatic reinfections are often underreported, the authors say.

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