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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 ...
"Guidelines on the Treatment and Management of Patients with COVID-19". Infectious Diseases Society of America (IDSA). "Coronavirus Disease 2019 (COVID-19) Treatment Guidelines". National Institutes of Health. World Health Organization. Corticosteroids for COVID-19: living guidance, 2 September 2020 (Report). hdl: 10665/334125. WHO/2019-nCoV ...
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] Its spread is uncommon outside of hospitals. [6]
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 ...
Indirect contact via contaminated surfaces is another possible cause of infection. [56] Preliminary research indicates that the virus may remain viable on plastic ( polypropylene ) and stainless steel ( AISI 304 ) for up to three days, but it does not survive on cardboard for more than one day or on copper for more than four hours. [ 10 ]
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 ...
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 ...
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]