Search results
Results from the WOW.Com Content Network
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.
The COVID‑19 vaccines are widely credited for their role in reducing the spread of COVID‑19 and reducing the severity and death caused by COVID‑19. [ 210 ] [ 213 ] Many countries implemented phased distribution plans that prioritized those at highest risk of complications, such as the elderly, and those at high risk of exposure and ...
[b] The COVID-19 pandemic also saw the emergence of misinformation and conspiracy theories, [39] and highlighted weaknesses in the U.S. public health system. [17] [40] [41] In the United States, there have been 103,436,829 [3] confirmed cases of COVID-19 with 1,212,505 [3] confirmed deaths, the most of any country, and the 17th highest per ...
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.
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.
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]
On January 20, Chinese authorities announced the confirmation that human-to-human transmission of the coronavirus had already occurred. [19] [20]The first recorded U.S. case of the new virus was also reported on January 20, in a 35-year-old American citizen traveling from Wuhan, China, to his home in Washington state.