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The history of coronaviruses is an account of the discovery of the diseases caused by coronaviruses and the diseases they cause. It starts with the first report of a new type of upper-respiratory tract disease among chickens in the U.S. state of North Dakota, in 1931.
Then, in 1949, he invented a machine that transformed the job of resurfacing an ice rink from a five-man, 90-minute task to a one-man, 15-minute job. [4] The initial machine included a hydraulic cylinder from an A-20 attack plane, a chassis from an oil derrick, a Jeep engine, a wooden bin to catch the shavings, and a series of pulleys.
All RMPs for COVID‑19 vaccines will be published on the EMA's website. [136] The EMA published guidance for developers of potential COVID‑19 vaccines on the clinical evidence to include in marketing authorization applications. [137] In November 2020, the CHMP started a rolling review of the Moderna vaccine for COVID‑19 known as mRNA-1273 ...
However, stylization as "Covid-19" has become common as well. Numerous news sources including The New York Times, CNN, Politico, The Wall Street Journal, NBCNews have presented the term with a capital C but all other letters as lower case. [30] As a result, use of "Covid-19" has become commonplace and even the accepted standard in some cases. [31]
Common capacities range from 30 kg (66 lb) to 1,755 kg (3,869 lb). Since the emergence of cube ice machines in the 1970s, they have evolved into a diverse family of ice machines. Cube ice machines are commonly seen as vertical modular devices. The upper part is an evaporator, and the lower part is an ice bin.
The FBI concluded with "moderate confidence" that COVID-19 may have been created in a laboratory, based in part on genomic analysis conducted by scientists at the National Center for Medical Intelligence. [98] On 20 March 2023, the COVID-19 Origin Act of 2023 was signed into law. On June 23, 2023, the Biden administration released its report ...
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]
Ice cream was originally made using very intensive labor and it often took one individual hours to make. Johnson had invented the hand cranked ice cream churn as a way to make ice cream faster and easier than by hand. [4] The patent number for the Artificial Freezer is US3254A. [5] It was patented on September 9, 1843, and antedated on July 29 ...