Covid live news: pressure grows on Boris Johnson over lockdown parties; Djokovic to spend night in detention

British PM faces fresh allegations that staff held regular drinking sessions when social mixing was prohibited, as Serbian tennis star fights deportation from Australia

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The US Centers for Disease Control and Prevention (CDC) on Friday revised its guidance on wearing masks to protect against Covid, recommending people use “the most protective mask you can” while stopping short of advocating nationwide usage of N95 respirators, Reuters reports.

The CDC, an agency critics have accused of offering shifting and confusing guidance amid the pandemic, clarified on its website “that people can choose respirators such as N95s and KN95s, including removing concerns related to supply shortages for N95s”.

Although I … accept that Mr Djokovic poses a negligible individual risk of transmitting Covid-19 to other persons, I nonetheless consider that his presence may be a risk to the health of the Australian community.