The Britain Government’s chief scientific adviser has warned people to continue using masks, on the day the country started with the news that the very first dose of the Pfizer vaccine had been administered. He explained though the vaccine prevents the virus taking hold in the body, there is no information about whether it prevents transmission among the vaccinated to the non-vaccinated. 

Speaking to a news agency, he said,  “It’s going to take quite a long time to make sure everybody in the at-risk groups and all of the groups that are difficult to reach get vaccinated as appropriate.” It will take at least a month or more before you see full immunity with the vaccine. he added,“It is important we all stick to the rules in the meantime – the rules are what’s keeping the virus down.” 

The scientist said “It may be that next winter even with vaccination we need measures like masks in place – we don’t know yet how good all the vaccines are going to be at preventing the transmission of the virus.” While medical-grade masks filter out 95% of virus spreading airborne aerosol particles which measure 0.3 micrometres or larger from coughing, sneezing, breathing or even talking, there is a growing body of evidence showing that even a simple cloth barrier helps dramatically slow transmission rates.

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