Investigation of zoonotic aspects of coronavirus covid-19

Coronaviruses have four main types: alpha, beta, gamma, and delta. Beta and gamma types cause respiratory illness in humans and animals. These viruses have spread various diseases in the last 26 years, and recently in Wuhan, China, a new disease that has spread around the world. Three of these important viruses are SARS, MERS, and SARS-CoV-2. They have a natural and moderate host in animals, especially bats. In case of SARS-CoV-2 virus, according to the gene sequence obtained from the virus, bats and penguins have been suspected as natural hosts. The virus is predicted to be transferred from bats to penguins and then mutated into humans. Due to the large number of viruses in the corona family, which affects many animals, a new type of virus is likely to spread again. And given experiences of SARS and SARS-CoV-2, the role of veterinarians in the live animals markets and livestock products markets should be reconsidered.