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and making them hesitant. i thinkty predicted last week there will be many surges in different parts of the country because of low vaccination rates and delta variant. would you recommend that americans start masking up indoors once again even if they are fully vaccinated? we know that the vaccines protect people from serious illness and death and do that at about 95% effectiveness. what we are less clear about are asymptomatic and mild cases of the covid. i do think if you are going to go inside we have some conflicting data from israel, from britain, it is not clear how much transmission happens with the vaccine with the delta