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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.
The COVID-19 pandemic has had many impacts on global health beyond those caused by the COVID-19 disease itself. It has led to a reduction in hospital visits for other reasons. There have been 38 per cent fewer hospital visits for heart attack symptoms in the United States and 40 per cent fewer in Spain. [1]
The commercial name for the FDA approved COVID-19 vaccine from Pfizer, released August 21, 2021. It also has several other names or designators used on the actual vials. Community transmission. Main article: Community transmission. The spread of a contagious disease to an individual with no known contact with other infected populations. Contact ...
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic . The symptoms of COVID‑19 can vary but often include fever, [ 7 ] fatigue, cough, breathing difficulties , loss of smell , and loss of taste .
HISB is a key strategy for many people to understand their health problems and to cope with illness. [2] Recently, thanks to the development of the technologies and networks, people have a trend of seeking health information on the Internet. Particularly, when it comes to the following scenarios, people tend to carry out online HISB: [3]
[2] [17] There are animal-borne coronavirus strains more closely related to SARS-CoV-2, the most closely known relative being the BANAL-52 bat coronavirus. SARS-CoV-2 is of zoonotic origin; its close genetic similarity to bat coronaviruses suggests it emerged from such a bat-borne virus . [ 18 ]
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Canine respiratory coronavirus (CRCoV), which is a member of the species Betacoronavirus 1 and related to HCoV-OC43, [139] cause respiratory disease. [127] Similarly, there are two types of coronavirus that infect ferrets. [ 140 ]