Theare with frequent, the family of Coronaviridae , which are responsible for digestive and respiratory infections in humans and animals. The virus owes its name to the appearance of its viral particles, bearing growths which evoke a crown. The , which consist of a covered with an envelope, measure 80 to 150 nm in diameter. Corona Virus
The small spheres contain aribonucleic (RNA) (with a single chain), linear (non-segmented) and positive, accounting for 27 to 32 . This RNA replicates in the of the infected cell.