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The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2, [1] the virus that causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 17 November 2019. [2]
ICTV approved it as Severe acute respiratory syndrome coronavirus in 2004, and renamed it Severe acute respiratory syndrome-related coronavirus in 2009. [94] By mid-July 2003, the infection subsided, and by then it had spread to 28 countries infecting 8096 people and causing 774 deaths.
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The aquatic lifestyle of cetaceans first began in the Indian subcontinent from even-toed ungulates 50 million years ago, with this initial stage lasting approximately 4-15 million years. [8] Archaeoceti is an extinct parvorder of Cetacea containing ancient whales.
They did not find any SARS-like viruses, but did find evidence for the transmission of a MERS-like virus from bats to hedgehogs. [ 80 ] In congressional testimony, coronavirus expert Ralph Baric stated that "the market was the site of amplification in late December, January.
In the 1950s, the human coronavirus OC43 began to diverge into its present genotypes. [89] Phylogenetically, mouse hepatitis virus (Murine coronavirus), which infects the mouse's liver and central nervous system, [90] is related to human coronavirus OC43 and bovine coronavirus. Human coronavirus HKU1, like the aforementioned viruses, also has ...
The COVID-19 vaccines are widely credited for their role in reducing the severity and death caused by COVID-19. [ 128 ] [ 129 ] As of March 2023, more than 5.5 billion people had received one or more doses [ 130 ] (11.8 billion in total) in over 197 countries.
A new study uses genetics to chart cockroaches' spread across the globe, from humble beginnings in southeast Asia to Europe and beyond. The findings span thousands of years of cockroach history ...