A review on severe acute respiratory syndrome 2 (sars cov-2)

Abstract

Coronavirus has attracted a lot of attention due to its ability to cause fatal zoonotic infections. These are the zoonotic viruses of both medical and veterinary importance. The virus spread through respiratory droplets and causes diseases, ranging from colds to more serious illnesses: Middle East Respiratory Syndrome, Severe Respiratory Syndrome, and Severe Respiratory Syndrome 2. The prevalence rate is high during winter and spring. Genomes of coronaviruses have large enveloped +RNA. First human corona viruses, causing respiratory diseases, were identified in 1960s, but they were not considered highly pathogenic to humans until severe respiratory syndrome broke out in China during 2003. Middle East Respiratory Syndrome, Severe Acute Respiratory Syndrome, and novel Corona Virus Disease (nCOVID-19) or Severe Acute Respiratory Syndrome-2 have increased the interest in this viral family. The Coronavirus-19 is a novel strain that was recently discovered in Wuhan (China) in December 2019. Studies revealed that reservoir of all the three fatal coronaviruses was bat with variation in the intermediate host i.e. civet cats for Severe Acute Respiratory Syndrome, dromedary camel for Middle East Respiratory Syndrome and bat or pangolin for Severe Acute Respiratory Syndrome 2. Numerous well-known corona viruses are circulating in animals that have not yet infected humans, while previously identified viruses could only be the tip of the iceberg, possibly with more novel and severe zoonotic events unfolding. Coronaviruses can be controlled with the global community's special attention and prophylaxis. However, in this review we will talk about the Severe Acute Respiratory Syndrome 2.