Search results
Results from the WOW.Com Content Network
The virus can spread to different organs throughout the chicken. [131] The virus is transmitted by aerosol and food contaminated by feces. Different vaccines against IBV exist and have helped to limit the spread of the virus and its variants. [127] Infectious bronchitis virus is one of a number of strains of the species Avian coronavirus. [133]
Tedros Adhanom Ghebreyesus explained: CO for corona, VI for virus, D for disease and 19 for when the outbreak was first identified (31 December 2019). [23] WHO additionally uses "the COVID-19 virus" and "the virus responsible for COVID-19" in public communications. [22] WHO named variants of concern and variants of interest using Greek letters.
The Central Intelligence Agency has assessed that the COVID-19 pandemic is "more likely" to have emerged from a lab rather than from nature, an agency spokesperson said on Saturday. The agency had ...
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.
The official app called "Corona-Warn-App" was made available for download on 16 June 2020 and presented in a press conference the same day. It was developed as open-source software jointly by Deutsche Telekom and SAP with scientific advice from the federal Robert Koch Institute and uses the Exposure Notification APIs from Google and Apple.
The virus has been successfully cultured by Pyrc and coworkers in the ex vivo model of human respiratory epithelium. [7] Additional research has revealed that the virus attaches itself to O-acetylated sialic acids on the cell surface, [8] which instigates a conformational shift in the S protein, facilitating interaction with the entry receptor. [9]
Virus infections start when viral particles bind to host surface cellular receptors. [158] Protein modeling experiments on the spike protein of the virus soon suggested that SARS‑CoV‑2 has sufficient affinity to the receptor angiotensin converting enzyme 2 (ACE2) on human cells to use them as a mechanism of cell entry . [ 159 ]
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]