A province in eastern China recorded 622 new cases of the intestinal virus known as enterovirus 71 on Saturday alone.

The figure brought to 5,151 the number of people infected by the virus in Anhui province. Anhui's worst hit city was Fuyang with 362 cases.

EV71 can cause hand, foot, and mouth disease, which is characterised by fever, sores in the mouth and a rash with blisters -- a common illness among infants and children but which is usually not fatal, according to the U.S. National Center for Infectious Diseases.

There is no vaccine or antiviral agent available to treat or prevent EV71. Enteroviruses spread mostly through contact with infected blisters or faeces and can cause high fever, paralysis and swelling of the brain.

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