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COVID-19 – do masks help?

Executive summary

* The official positions from the World Health Organisation (WHO), the US Centres for Disease Control (CDC), the US Surgeon General and the UK Deputy Chief Medical officer are similar – you don’t need a mask. Some go even further and suggest that wearing a mask may do more harm than good. Others caution that masks should be saved for caregivers.

* A campaign called #Mas...


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