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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.
Dozens of captive animal species have been found infected or proven able to be experimentally infected with SARS-CoV-2, the virus that causes COVID-19. The virus has also been found in over a dozen wild animal species. Most animal species that can get the virus have not been proven to be able to spread it back to humans.
The betacoronaviruses of the greatest clinical importance concerning humans are OC43 and HKU1 (which can cause the common cold) of lineage A, SARS-CoV-1 and SARS-CoV-2 (the causes of SARS and COVID-19 respectively) of lineage B, [2] and MERS-CoV (the cause of MERS) of lineage C. MERS-CoV is the first betacoronavirus belonging to lineage C that ...
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.
Similarly, the human coronavirus OC43, the main cause of the common cold, can use the pig as a zoonotic reservoir, [30] constantly reinfecting the human population. Veterinarians are exposed to unique occupational hazards when it comes to zoonotic disease. In the US, studies have highlighted an increased risk of injuries and lack of veterinary ...
The coronavirus causing COVID-19 is a nasty bug, but like other members of the coronavirus family, it’s no match for good disinfecting products, health experts say. “There are many bad things ...
Lyme, norovirus and other vacation bugs. Bugs in different areas of the world can harbor a variety of illnesses. Three years into the pandemic, an increasing number of Americans have the itch to ...
Four human coronaviruses cause typically minor symptoms of a common cold, while three are known to cause more serious illness and can be lethal: SARS-CoV-1, which causes SARS; MERS-CoV, which causes MERS; and SARS-CoV-2, which causes COVID-19. [12] Symptoms vary in other species: in chickens, they cause an upper respiratory disease, while in ...