The coronavirus RNA genome has a 5′ methylated cap and a 3′ polyadenylated tail, which allows it to act like a messenger RNA and be directly translated by the host cell's ribosomes. The host …

Apr 17, 2026 · Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and …

Treatment Learn about the types of COVID-19 treatments, symptom management, and recovery.

Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. Starting in January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. In …

Apr 13, 2026 · The heavily mutated new BA.3.2 COVID-19 variant, aka "cicada," is circulating in at least 31 U.S. states, data show. What to know about its spread and symptoms.

Mar 13, 2026 · Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.

Nov 27, 2025 · COVID-19 is a disease caused by the SARS-CoV-2 coronavirus. There are a range of signs and symptoms, but hte most common symptoms reported for currently-circulating variants are …

Learn about COVID-19 and how it spreads About COVID-19 COVID-19 most often causes respiratory symptoms that can feel much like a cold, the flu, or pneumonia. COVID-19 may attack more than …

Feb 28, 2025 · COVID-19 (Coronavirus) Medically Reviewed. Last updated on 02/28/2025. COVID-19 is an illness caused by the SARS-CoV-2 virus. It spreads through respiratory droplets. Symptoms …

May 31, 2026 · Stay informed about COVID-19 symptoms and prevention. Explore WebMD's comprehensive resource for information on signs, precautions, and the latest updates.