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Infectious diseases,; Health ,protection, in schools ... Chickenpox is highly ,infectious, and is spread by ,respiratory, secretions or by ... and spills should be cleared ,wearing protective clothing, and ...
Degrees of ,respiratory protection, and barrier properties differ according to various standards and test methods. Therefore, it is important to understand the national or international standards ,for respiratory protective, equipment and ,protective clothing,, and PPE certified to provide effective ,protection, against SARS-CoV-2 should be chosen.