Der Vortrag „COVID-19: Prevention“ von Sean Elliott, MD ist Bestandteil des Kurses „Coronavirus“.
What is the more important rationale for wearing masks to help decrease the spread of COVID-19?
What is the minimal concentration of alcohol-based hand sanitizer needed to be effective?
What was the change in the incidence of influenza cases in the US in during the COVID-19 pandemic?
The CDC in the USA recommends that masks be worn by both vaccinated and unvaccinated people...? (Select all that apply)
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