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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.
This article documents the chronology and epidemiology of SARS-CoV-2, the virus that causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic, in April 2021. The first human cases of COVID-19 were identified in Wuhan , China, in December 2019.
In January 2020, the World Health Organization (WHO) recommended 2019-nCoV [35] and 2019-nCoV acute respiratory disease [36] as interim names for the virus and disease per 2015 guidance and international guidelines against using geographical locations or groups of people in disease and virus names to prevent social stigma.
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 ]
Transmissible gastroenteritis virus (TGEV) 1946 (isolated in 1965) [16] Infects pigs, [16] cats, [17] and dogs. [18] Humans: Common cold: Human coronavirus 229E (HCoV‑229E) 1930s (isolated in 1965) [19] Possibly originated from bats. [20] Mice, rats: Encephalitis: MHV-JHM, a strain of murine coronavirus (M‑CoV) named after John Howard ...
Download QR code; Print/export Download as PDF; Printable version; In other projects ... SARS-CoV-2 (virus) Cases; Deaths; Timeline. 2019 2020. January.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... SARS-CoV-2 (virus) Cases; Deaths; Timeline. 2019 2020. January.