Laura Aversano

Poliomyelitis (often simply called polio) is an acute viral infection that involves the gastrointestinal tract and occasionally the central nervous system. Poliovirus is acquired by faecal–oral or oral transmission. Prior to the introduction of a polio vaccine in 1955, infection was common, with epidemics during the summer and autumn of temperate countries. Polio eradication efforts have reduced the number of estimated polio cases worldwide by more than 99% since the mid-1980s. Most infections a…