True about the following virus: A. Enveloped, Club or petal shaped projections, Positive ss RNA- Largest genome of RNA virus. B. Diseases caused by these viruses are SARS, MERS. C. Reservoir is horseshoe bats for SARS, likely spread from palm-civets cats contact with humans. D. Symptoms of MERS appear within a day following contact with an infected patient. E. SARS is more severe than MERS. F. MERS infection is more servere in individuals who have a preexisting illness like diabetes and hea diseases.

The given image is of Corona virus. It is an Enveloped virus with Club or petal shaped projections, Positive ss RNA virus. The Wuhan coronavirus or the 2019-nCoV is a positive-sense, single-stranded RNA coronavirus first repoed in late 2019 and linked in the 2019-2020 pneumonia outbreak in Wuhan City in central China. 100-160 nm in size. Disease caused by these viruses are: SARS (severe acute respiratory syndrome) MERS (Middle East respiratory syndrome ) COVID19. Reservoir for SARS is HORSESHOE bats, likely spread from palm-civets cats contact with humans. MERS has a median Incubation Period of 5 days, symptoms appear between 2-14 days. MERS is more severe in individuals who have a preexisting illness like diabetes and hea diseases.