Centres for Disease Control
The use of high-grade face masks sees 100 per cent protection against direct, ward-based Covid-19 infection, says study
Experts say hospitalisation, mortality likely to rise among the age group
While N95 masks are the gold standard, the best combination of double masking is to wear a normal cloth mask over a surgical mask
The Secret Service has refused to disclose how many of its employees have tested positive or have had to quarantine, citing privacy and security.
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