The earliest coronaviruses were discovered were an infectious bronchitis virus in chickens and two in human patients with the common cold (later named human coronavirus 229E and human coronavirus OC43). Coronaviruses were found to be causing diseases in livestock since early 1970s. Coronaviruses are extensively found in tropical climates and survive best at low temperatures. A high penetration of ultra-violet radiation and increasing temperatures have negative effect on the survival of virus … Continue Reading →