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COVID-19. 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 ...
The COVID-19 pandemic, also called the coronavirus pandemic, was a world-wide pandemic of coronavirus disease 2019 (COVID-19). It is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). [1] [7] [b] The disease was first found in Wuhan, Hubei, China, in December 2019. On 31 December, Chinese health authorities told the World ...
- Diseases
- Structure
- History
Coronaviruses infect the upper respiratory and gastrointestinal tracts of mammals and birds. Six different strains of coronaviruses infect humans. These include: 1. MERS-CoV 2. SARS-CoV 3. Severe acute respiratory syndrome coronavirus 2, which causes the disease coronavirus disease 2019 and is the cause of the COVID-19 pandemic(formerly referred as...
Coronaviruses are large, spherical particles with unique surface projections. Their size is variable, averageing 80 to 120 nms. The total molecular weight is on average 40,000 kDa. They are enclosed in an envelope studded with projecting protein molecules.These layers protect the virus when it is outside the host cell. The viral envelope is made up...
The earliest reports of a coronavirus infection in animals occurred in the late 1920s, when an acute respiratory infection of domesticated chickens happened in North America. Arthur Schalk and M.C. Hawn in 1931 made the first detailed report which described a new respiratory infection of chickens in North Dakota. It was not realized at the time tha...
COVID-19 pandemic 2019–present Wuhan, China Worldwide 7-35 million (as of 2024) 10 Asian flu 1957–1958 Guizhou, China Worldwide 1–4 million Hong Kong flu 1968–1969 Hong Kong Worldwide 11 1918–1922 Russia typhus epidemic 1918–1922 Russia 2–3 ...
Polish authorities did not take part in the 28 February 2020 European Union procedure for purchasing COVID-19 pandemic related medical equipment, in which 20 other member states participated. Poland applied on 6 March for the 17 March tender for the purchase of gloves, goggles, face shields, surgical masks and protective clothing.
Rosa Parks. Rosa Louise McCauley Parks (February 4, 1913 – October 24, 2005) was an African-American civil rights activist. She was called "the mother of the Modern-Day American civil rights movement" and "the mother of the freedom movement". Parks is best known for what she did in her home town of Montgomery, Alabama on December 1, 1955.
The 2020s (pronounced "twenty-twenties" or "two thousand twenties") is the current decade that began on January 1, 2020 and will end on December 31, 2029. It is distinct from the decade known as the 203rd decade which began on January 1, 2021 and will end on December 31, 2030.
