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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. [ 7 ] 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 ...
A COVID-19 vaccine is intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 . Prior to the COVID-19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...
[b] The COVID-19 pandemic also saw the emergence of misinformation and conspiracy theories, [39] and highlighted weaknesses in the U.S. public health system. [17] [40] [41] In the United States, there have been 103,436,829 [3] confirmed cases of COVID-19 with 1,199,064 [3] confirmed deaths, the most of any country, and the 17th highest per ...
Heat illness is a spectrum of disorders due to increased body temperature. It can be caused by either environmental conditions or by exertion. It includes minor conditions such as heat cramps, heat syncope, and heat exhaustion as well as the more severe condition known as heat stroke. [1] It can affect any or all anatomical systems. [2]
The White House COVID-19 outbreak was a cluster of SARS-CoV-2 infections that began in September 2020 and ended in January 2021 that spread among people, including many U.S. government officials, who were in close contact during the COVID-19 pandemic in Washington, D.C. Numerous high-profile individuals were infected, including then President ...
Other fixed points used in the past are the body temperature (of a healthy adult male) which was originally used by Fahrenheit as his upper fixed point (96 °F (35.6 °C) to be a number divisible by 12) and the lowest temperature given by a mixture of salt and ice, which was originally the definition of 0 °F (−17.8 °C). [37]
Among the COVID-19 vaccines are a number of RNA vaccines to combat the COVID-19 pandemic and some have been approved or have received emergency use authorization in some countries. For example, the Pfizer-BioNTech vaccine and Moderna mRNA vaccine are approved for use in adults and children in the US. [71] [72] [73]
In the Canary Islands, annual average temperature varies from less than 10 °C (50 °F) in the highest altitude area of Santa Cruz de Tenerife to more than 21.5 °C (70.7 °F) on lower areas of Santa Cruz de Tenerife, while the average annual precipitation ranges from more than 1,000 millimetres (39 in) on the highest altitudes of La Palma to ...