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From 16 January masks were again required for indoor public areas in the Perth and Peel regions, after five new cases of SARS-CoV-2 Omicron variant. Visitors to Perth or Peel from 6 January were required to wear a mask indoors if they had gone to another area. There were 81 known and active Omicron cases in WA.
SARS‑CoV‑2 is a strain of the species Betacoronavirus pandemicum (SARSr-CoV), as is SARS-CoV-1, the virus that caused the 2002–2004 SARS outbreak. [ 2 ] [ 17 ] There are animal-borne coronavirus strains more closely related to SARS-CoV-2, the most closely known relative being the BANAL-52 bat coronavirus.
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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]
On 25 January, the first case of a SARS-CoV-2 infection was reported, that of a Chinese citizen who arrived from Guangzhou on 19 January. The patient was tested and received treatment in Melbourne. [2] [3] On the same day, three other patients tested positive in Sydney after returning from Wuhan. [4] [5] [6] Nine cases were recorded in January.
95.2% of the eligible Australian population aged 12+ are fully vaccinated 64.5% of the eligible Australian population aged 12+ are booster given Website Department of Health and Aged Care A poster released in March 2021, part of the Australian Government's COVID-19 vaccination rollout A poster from the government's vaccination campaign rolled out in July 2021, titled "Arm yourself against ...
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SARS-related coronavirus is a member of the genus Betacoronavirus (group 2) and monotypic of the subgenus Sarbecovirus (subgroup B). [13] Sarbecoviruses, unlike embecoviruses or alphacoronaviruses, have only one papain-like proteinase (PLpro) instead of two in the open reading frame ORF1ab. [14]