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In a February 2020 email exchange with a former US health secretary, Dr Fauci said: "Masks are really for infected people to prevent them from spreading infection to people who are not infected rather than protecting uninfected people from acquiring infection."
He added that store-bought masks are "not really effective in keeping out virus, which is small enough to pass through material".
He added that store-bought masks are "not really effective in keeping out virus, which is small enough to pass through material".
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