
First symptom of corona virus also called as Wuhan corona virus had been found in early 1960’s, along with some deadly virus named severe acute respiratory syndrome(SARS). It usually affects the mammals and birds due to strain of airborne droplets spread by other infected individuals.
In early days four types of corona virus were known- Alpha Coronavirus, Beta Coronavirus, Gamma Coronavirus, Delta Coronavirus. First two can infect only mammals like pigs, bats, etc. Gamma Coronavirus mainly affects birds and Delta Coronavirus affects both mammals and birds. This virus is spreading at much faster rate than it should be realized of being infected among the individual. It is reported that Corona virus is spreading at 3 times faster rate than SARS.
Wuhan coronavirus was first identified in the Chinese city of Wuhan in 2019. At the time of writing, numbers of infected are still on the rise, with a mortality rate of around 1 percent. Snakes were firstly found affected by this virus.
Comparisons have been drawn between the pneumonia caused by the new virus and that induced by SARS, which infected more than 8000 people during a global outbreak that began in 2003. The viruses are from the same family, and both can cause fever and pneumonia.
So far, the new virus seems to have a lower fatality rate. Based on the number of reported cases and deaths, the rate seems to be about 2.8 per cent, compared with a 9.6 per cent rate for SARS. But it is too soon to be sure just how dangerous the virus is. We are still in the early days of the outbreak.
There is also a chance that the virus could mutate to become more contagious or deadly. However, there is no evidence yet that the virus has mutated within people, and the World Health Organization (WHO) told a press conference last week that the virus appears to be stable.
If the virus is able to spread before symptoms show, that could explain why it is spreading so quickly.


