The most common COVID-19 symptoms are fever, tiredness, and a dry cough. Patients can also have nasal congestion, runny nose, sore throat, or aches. It can take up to 14 days before symptoms begin. Most commonly, symptoms arise around
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To protect myself from catching COVID-19, I should:
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If you can't wash your hands with soap & water, the CDC recommends you use hand sanitizer containing at least ............... alcohol
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A virus consists of:
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How do viruses reproduce?
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Retroviruses are different from viruses in that:
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Vaccines can be used to prevent viral infection by:
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Antiviral drugs that are used after infection often prevent:
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