Background of coronavirus in china

Background of coronavirus in china. Coronaviruses belong to the order Nidovirales, Coronaviridae, and Coronavirus. They are important pathogens for many livestock and pets, including human diseases, and cause a variety of acute and chronic diseases. The Ninth International Committee on Classification of Virology divided the Coronaviridae into three genera, namely, alpha, beta, and gamma. Coronavirus alpha includes Coronavirus alpha1, human coronavirus 229E, human coronavirus NL63, long-winged bat coronavirus HPU1, long-winged bat coronavirus HPU8, chrysanthemum bat coronavirus HPU2, and porcine epidemic diarrhea virus (Porcineepidemicdiarrheavirus, PEDV) and other 8 species. Porcine infectious gastroenteritis virus (Transmissible gastroenteritis virus (TGEV), canine corona virus (CCoV) and feline corona virus (FCoV) are members of alpha coronavirus 1). 

Research History of Coronaviruses

Coronaviruses were isolated in 1965, but their current understanding is quite limited. Neutralizing antibodies can be detected in 50% of children aged 5 to 9 years , and 70% of adults are positive for neutralizing antibodies. Rhinovirus was discovered in the 1950s. Rhinovirus was first associated with colds , but only about 50% of colds are caused by rhinoviruses. In 1965, Tyrrell et al. Used a human embryo tracheal culture method to isolate a virus from a nasal wash of a common cold patient and named it B814 virus. Subsequently, Hamre et al isolated a similar virus using human embryonic kidney cells , and named the strain 229E virus. 

What is Coronavirus according to Science Encyclopedia entry writing

What is Coronavirus according to Science Encyclopedia entry writing. Coronaviruses are systematically classified as Coronaviridae (Coronaviridae). Coronavirus is a positive-stranded single-stranded RNA virus with an envelope of about 80 to 120 nm in diameter. Its genetic material is the largest of all RNA viruses and only infects humans, mice, pigs, cats, dogs, and birds. class of vertebrates. A variant of coronavirus is the pathogen that causes atypical pneumonia and belongs to the RNA virus. Coronavirus was first isolated from chickens in 1937.