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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.
Current selections: dengue fever, poliomyelitis, smallpox, influenza, hepatitis B, herpes simplex, common cold, herpes zoster, meningitis, hepatitis C ...
[3] [36] Syphilis can be transmitted by blood products, but the risk is low due to screening of donated blood in many countries. [3] The risk of transmission from sharing needles appears to be limited. [3] It is not generally possible to contract syphilis through toilet seats, daily activities, hot tubs, or sharing eating utensils or clothing. [38]
A zoonosis (/ z oʊ ˈ ɒ n ə s ɪ s, ˌ z oʊ ə ˈ n oʊ s ɪ s / ⓘ; [1] pl.: zoonoses) or zoonotic disease is an infectious disease of humans caused by a pathogen (an infectious agent, such as a bacterium, virus, parasite, or prion) that can jump from a non-human vertebrate to a human. When humans infect non-humans, it is called reverse ...
Less commonly, when the contaminated droplets fall to floors or surfaces they can remain infectious if people touch contaminated surfaces and then their eyes, nose or mouth with unwashed hands. Some people have been infected and recovered without showing symptoms, and such people may be able to spread COVID-19.
Airborne diseases can be transmitted from one individual to another through the air. The pathogens transmitted may be any kind of microbe , and they may be spread in aerosols, dust or droplets. The aerosols might be generated from sources of infection such as the bodily secretions of an infected individual, or biological wastes.
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 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 sing.
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