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1. www.cdc.gov › coronavirus › 2019-ncovAbout COVID-19 | CDC

   www.cdc.gov › coronavirus › 2019-ncov

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   COVID-19 (coronavirus disease 2019) is a disease caused by a virus named SARS-CoV-2. It can be very contagious and spreads quickly. Over one million people have died from COVID-19 in the United States. COVID-19 most often causes respiratory symptoms that can feel much like a cold, the flu, or pneumonia. COVID-19 may attack more than your lungs ...

2. www.ncbi.nlm.nih.gov › pmc › articlesSARS-COV-2, infection, transmission, transcription ...

   www.ncbi.nlm.nih.gov › pmc › articles

   Dec 12, 2021 · The genome of SARS-CoV-2 contains over 29,000 bases and codes for 29 proteins. SARS-CoV-2 has four structural proteins: The proteins E and M that form the viral envelope, protein N binds to the RNA genome of SARS-CoV-2 and S protein, which binds to host ACE2 receptor to initiate infection. The nonstructural proteins (NsPs) initially form as two ...

3. www.who.int › activities › tracking-SARS-CoV-2-variantsTracking SARS-CoV-2 variants - World Health Organization (WHO)

   www.who.int › activities › tracking-SARS-CoV-2-variants

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   May 14, 2024 · Tracking SARS-CoV-2 variants. All viruses, including SARS-CoV-2, the virus that causes COVID-19, change over time. Most changes have little to no impact on the virus’s properties. However, some changes may affect the virus’s properties, such as how easily it spreads, the associated disease severity, or the performance of vaccines ...

4. www.ncbi.nlm.nih.gov › pmc › articlesSARS-CoV-2: cómo es, cómo actúa y cómo se expresa en la ...

   www.ncbi.nlm.nih.gov › pmc › articles

   El SARS-CoV-2 (SARS-2 a partir de ahora) tiene un diámetro de 50-200 nm ( fig. 1 A). De sus proteínas de superficie, la glicoproteína Spike o “S” es la que se une a la célula del huésped a través de los receptores para la enzima convertidora de angiotensina II (ECA II) 3.

5. www.ncbi.nlm.nih.gov › pmc › articlesCoronaviruses and SARS-CoV-2: A Brief Overview - PMC

   www.ncbi.nlm.nih.gov › pmc › articles

   Apr 4, 2020 · The genome of the new coronavirus shows similarities to other β-CoV found in bats. 20 SARS-CoV-2 is 96.2% identical to a bat CoV RaTG13, whereas it shares 79.5% identity to SARS-CoV. It can therefore be assumed that the virus originally came from bats and has been transmitted over time to other animal hosts and ultimately to humans.

6. www.cdc.gov › coronavirus › 2019-ncovOverview of Testing for SARS-CoV-2, the virus that causes ...

   www.cdc.gov › coronavirus › 2019-ncov

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   Mar 18, 2024 · Testing for SARS-CoV-2 Infection Test Types. Viral tests, including nucleic acid amplification tests (NAATs, such as PCR tests), antigen tests and other tests (such as breath tests) are used as diagnostic tests to detect current infection with SARS-CoV-2, determine the need for prevention measures like isolation, and inform an individual’s medical care.

7. www.who.int › emergencies › disease-outbreak-newsSARS-CoV-2 Variants - World Health Organization (WHO)

   www.who.int › emergencies › disease-outbreak-news

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   Dec 31, 2020 · SARS-CoV-2, the virus that causes COVID-19, has had a major impact on human health globally; infecting a large number of people; causing severe disease and associated long-term health sequelae; resulting in death and excess mortality, especially among older and vulnerable populations; interrupting routine healthcare services; disruptions to travel, trade, education and many other societal ...