Scientists have spent more than a year studying the coronavirus. Here's what they've learned about how it spreads, why its symptoms and severity vary, what to expect from vaccines and variants, and why there's still more to learn: 5 mysteries about COVID-19 that scientists must solve to end the pandemic
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| 5 mysteries about COVID-19 that scientists must solve to end the pandemic |
| Asymptomatic spread: SARS-CoV-2, the virus behind the pandemic, is remarkable in its ability to transmit from person to person. Unlike other related viruses - such as Severe Acute Respiratory Syndrome (SARS), which is transmitted when an infected person is showing symptoms - SARS-CoV-2 can spread through asymptomatic people. |
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Stephanie Weiner
Director, Digital Strategy & Engagement
Association of American Medical Colleges
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