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Transmission of COVID-19. The transmission of COVID-19 is the passing of coronavirus disease 2019 from person to person. COVID-19 is mainly transmitted when people breathe in air contaminated by droplets / aerosols and small airborne particles containing the virus. Infected people exhale those particles as they breathe, talk, cough, sneeze, or ...
MERS-CoV is a virus in the coronavirus family believed to be originally from bats. [ 1] However, humans are typically infected from camels, either during direct contact or indirectly through respiratory droplets. [ 1] Spread between humans typically requires close contact with an infected person. [ 1]
Betacoronavirus cameli [ 1] ( also known as Middle East respiratory syndrome–related coronavirus abbreviated as MERS-CoV ), [ 2] or EMC/2012 ( HCoV-EMC/2012 ), is the virus that causes Middle East respiratory syndrome (MERS). [ 3][ 4] It is a species of coronavirus which infects humans, bats, and camels. [ 5]
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 COVID-19 that is considered most plausible by the scientific community. [a] Human coronaviruses including SARS-CoV-2 are zoonotic diseases that are ...
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] SARSr-CoV was determined to be an early split-off ...
Sialodacryoadenitis virus (SDAV), which is a strain of the species Murine coronavirus, [143] is highly infectious coronavirus of laboratory rats, which can be transmitted between individuals by direct contact and indirectly by aerosol. Rabbit enteric coronavirus causes acute gastrointestinal disease and diarrhea in young European rabbits. [127]
Betacoronavirus (β-CoVs or Beta-CoVs) is one of four genera ( Alpha -, Beta-, Gamma-, and Delta-) of coronaviruses. Member viruses are enveloped, positive-strand RNA viruses that infect mammals, including humans. The natural reservoir for betacoronaviruses are bats and rodents. Rodents are the reservoir for the subgenus Embecovirus, while bats ...
Severe acute respiratory syndrome (SARS) is the disease caused by SARS-CoV-1. It causes an often severe illness and is marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, [ 13] mainly cough, dyspnea, and pneumonia. Another common finding in SARS patients is a ...