The Centers for Disease Control and Prevention (CDC), however, is yet to issue any fresh guidelines on masks but Poynter.org quoted CDC Director Dr Rochelle Walensky as saying that it is something that they are actively looking into at the CDC.
Masks in indoor and public settings are back in some parts of the US as Covid-19 cases are soaring, while a recent study by researchers in Hong Kong shows that the explosive growth of infection rates in China could also lead to mutations of the .
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