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5 essential things to know before picking the right mask

BF.7 has the strongest infection ability, is quicker to transmit than other infections and is easy to infect people who have had Covid infections or been vaccinated or both. One subvariant, BF.7, has recently been identified as the main variant spreading in Beijing, contributing to a larger COVID infection surge in China. The same subvariant has infected 4 people in India but health authorities have informed that there is no need to panic for now.