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Five years ago Monday, someone was identified with COVID-19 for the first time on American soil. In the years since, 1.2 million Americans have died from the virus, and more than 7 million ...
SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of SARS-CoV-2 that is considered most plausible by the scientific community.
Weekly confirmed COVID-19 deaths Map of cumulative COVID-19 death rates by U.S. state [8] On December 31, 2019, China announced the discovery of a cluster of pneumonia cases in Wuhan. The first American case was reported on January 20, [9] and Health and Human Services Secretary Alex Azar declared a public health emergency on January 31. [10]
An example of fake news related to the COVID-19 pandemic was that the virus could be spread via 5G. [23] Another, that the virus was manually created in a lab by government leaders [ 24 ] [ 25 ] or that consuming chlorine dioxide would treat or prevent the virus. [ 26 ]
A PNAS report in September 2020 confirmed that the virus is much more dangerous for the elderly than the young, noting that about 70% of all U.S. COVID-19 deaths had occurred to those over the age of 70. [94] As of early August 2020, among the 45 countries that had over 50,000 cases, the U.S. had the eighth highest number of deaths per-capita.
In the experiments, macaques infected with the virus developed the same symptoms as human SARS patients. [11] A virus very similar to SARS was discovered in late 2019. This virus, named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the causative pathogen of COVID-19, the propagation of which started the COVID-19 pandemic. [12]
Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.
This article documents the chronology and epidemiology of SARS-CoV-2 in 2019, the virus that causes coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 known to have been identified were in Wuhan , Hubei , China , in December 2019.