masks

  • How effective are masks? Depends on the material it is made of

    Worldwide, the covid-19 epidemic is spreading. SARS CoV-2 virus did not magically disappear, and in many places, this situation rose again, and it seems that the new reality of closing and resident orders will last longer than most cases. We initially expected. Given this, according to the CDC guidelines, I…
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UPITITE ODMAH