Amid Maharashtra's worsening COVID-19 situation, virus variant with double mutation detected in state The institutes working on a project under the NCDC have alerted the Union health ministry to label the variant with the double mutation as a likely variant of concern (VOC). Share Via Email | A+A A- A health worker sanitizes the baggage of passengers as a precaution against COVID-19 at a long distance train station in Mumbai. (Photo | AP) Express News Service NEW DELHI: Scientific institutes tasked with genome sequencing of the Covid-19 virus in the country have alerted the Centre on a virus variant with double mutation in Maharashtra, whose possible role in the surge in cases is being probed, this newspaper has gathered.