Falsecolour transmission electron micrograph TEM of rotaviruses Rotaviruses belong to the genus Reovirus and are the causative agent of infantile gastroenteritis in humans mice and calves The viruses are nanometres in diameter and do not have the lipoprotein envelope seen in many other genera The genome of this virus is a doublestranded RNA fragmented into ten segments The virus gets its name from the wheellike appearance of the capsid protein shell Magnification x at xcm size
