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18.2–33.5 million [6] (estimated) 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 ...
- 疫情Q&A - Yahoo奇摩新聞
The COVID-19 pandemic, also known as the coronavirus pandemic, is a global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, they cause respiratory tract infections that can range from mild to lethal.
The symptoms of COVID-19 are variable depending on the type of variant contracted, ranging from mild symptoms to a potentially fatal illness. Common symptoms include coughing, fever, loss of smell (anosmia) and taste (ageusia), with less common ones including headaches, nasal congestion and runny nose, muscle pain, sore throat, diarrhea, eye irritation, and toes swelling or turning purple, and ...
Structural view of a coronavirus. Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.
Host OrganismDiseasePathogenYear Of Discovery1920s [14] ( isolated in 1938) [15]Pigs, dogs, cats1946 (isolated in 1965) [16]Human coronavirus 229E ( HCoV‑229E )1930s (isolated in 1965) [19]Mice, ratsMHV-JHM, a strain of murine coronavirus ( ...1949 [22]COVID-19 portal. v. t. e. This article contains the number of confirmed COVID-19 deaths per population as of 6 June 2024, by country. It also has cumulative death totals by country. For these numbers over time see the tables, graphs, and maps at COVID-19 pandemic deaths and COVID-19 pandemic by country and territory .
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 ...
