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Smallpox vaccine. The smallpox vaccine is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus.
e. The Oxford–AstraZeneca COVID‑19 vaccine, sold under the brand names Covishield [31] and Vaxzevria [1] [32] among others, is a viral vector vaccine for the prevention of COVID-19. It was developed in the United Kingdom by Oxford University and British-Swedish company AstraZeneca, [33] [34] [35] using as a vector the modified chimpanzee ...
Wikipedia is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.Wikipedia is the largest and most-read reference work in history, and is consistently ranked among the ten most visited websites; as of April 2024, it was ranked fourth by Semrush, and seventh by Similarweb.
Edinburgh is the capital city of Scotland and one of its 32 council areas. Located in the south-east of Scotland, it is bounded to the north by the Firth of Forth estuary and to the south by the Pentland Hills. With a population of 506,520 in mid-2020, Edinburgh is the second-largest city in Scotland by population and the seventh-largest in the ...
World War II deaths by country World War II deaths by theater Soviet soldiers killed during the Toropets–Kholm Offensive, January 1942. Officially, roughly 8.6 million Soviet soldiers died in the course of the war, including millions of POWs. Einsatzgruppen murder Jewish civilians outside Ivanhorod, Ukraine, 1942. Over 6 million Jews were ...
Ethnologue (2023) The following languages are listed as having 45 million or more total speakers in the 26th edition of Ethnologue published in 2023. This section does not include entries that Ethnologue identifies as macrolanguages encompassing all their respective varieties, such as Arabic, Lahnda, Persian, Malay, Pashto, and Chinese.
Christopher Columbus [b] ( / kəˈlʌmbəs /; [2] between 25 August and 31 October 1451 – 20 May 1506) was an Italian [3] [c] explorer and navigator from the Republic of Genoa who completed four Spanish-based voyages across the Atlantic Ocean sponsored by the Catholic Monarchs, opening the way for the widespread European exploration and European col...
