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On January 5, a confirmed case of a new, more contagious SARS-CoV-2 variant from the United Kingdom was reported in Georgia. The patient is an 18-year-old male with no travel history. [5] Also on January 5, the U.S. passed 21 million cases, just four days after passing 20 million cases. [6]
On 11 February 2020, the International Committee on Taxonomy of Viruses adopted the official name "severe acute respiratory syndrome coronavirus 2" (SARS‑CoV‑2). [33] To avoid confusion with the disease SARS , the WHO sometimes refers to SARS‑CoV‑2 as "the COVID-19 virus" in public health communications [ 34 ] [ 35 ] and the name HCoV ...
In the 18 months following containment of the initial outbreak in Wuhan, two COVID-19 deaths were recorded. [512] [513] In December 2022, the Chinese government ended its zero-COVID policy and mass testing following protests across the country. [495] In 2020 and 2021, China was the largest exporter of COVID-19 critical medical products.
As of 2023, the COVID-19 pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS CoV‑2). Its effect has been broad, affecting general society, the global economy, culture, ecology, politics, and other areas.
Throughout the COVID-19 pandemic, the genome of SARS-CoV-2 viruses has been sequenced many times, resulting in identification of thousands of distinct variants. In a World Health Organization analysis from July 2020, ORF1ab was the most frequently mutated gene, followed by the S gene encoding the spike protein .
The envelope (E) protein is the smallest and least well-characterized of the four major structural proteins found in coronavirus virions. [2] [3] [4] It is an integral membrane protein less than 110 amino acid residues long; [2] in SARS-CoV-2, the causative agent of Covid-19, the E protein is 75 residues long. [5]
The president offered an absolute guarantee Wednesday that people who get their COVID-19 vaccines are completely protected from infection, sickness and death from the coronavirus.
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