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Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2.The first known case was identified in Wuhan, China, in December 2019. Most scientists believe the SARS-CoV-2 virus entered into human populations through natural zoonosis, similar to the SARS-CoV-1 and MERS-CoV outbreaks, and consistent with other pandemics in human history.
The treatment and management of COVID-19 combines both supportive care, which includes treatment to relieve symptoms, fluid therapy, oxygen support as needed, [1] [2] [3] and a growing list of approved medications. Highly effective vaccines have reduced mortality related to SARS-CoV-2; however, for those awaiting vaccination, as well as for the ...
The COVID-19 pandemic is the deadliest disaster in the country's history. It was the third-leading cause of death in the U.S. in 2020, behind heart disease and cancer. From 2019 to 2020, U.S. life expectancy dropped by 3 years for Hispanic and Latino Americans, 2.9 years for African Americans, and 1.2 years for white Americans.
Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. The virus previously had the provisional name 2019 novel coronavirus (2019-nCoV), and has also been called human coronavirus 2019 (HCoV-19 or hCoV-19).
Caregivers should also use masks, faceshields, and other personal protective equipment when caring for people with active COVID-19, and high filtration masks, like the N95, for any activities that may generate aerosol from an infected patient. Recommendations for, and against mask use by the general public, vary by country and region.
Coronavirus disease 2019 ( COVID-19) is an infectious disease caused by SARS coronavirus 2 (SARS-CoV-2), [5] a virus closely related to the SARS virus. [6] [7] [8] The disease is the cause of the COVID-19 pandemic. [9] [10] People who get the disease might get fever, dry cough, fatigue (tiredness), loss of taste or smell, and shortness of breath.
A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2 ), the virus that causes coronavirus disease 2019 ( COVID‑19 ). Prior to the COVID‑19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing ...
