Via Xinhua :
" BEIJING, May 19 : Three children in Shanghai have died of hand, foot and mouth disease so far this year in an alarming trend.
The peak season of the malady had arrived early and the 2010 strain of the virus was particularly powerful, the Shanghai Health Bureau said Tuesday.
The suburban children who died were generally unsupervised and had migrant parents, according to education authorities.
They did not attend city kindergartens and lived in conditions where hygiene was poor or non-existent, officials said.
The peak season for the virus arrived in Shanghai last month.
By mid April, Shanghai reported 6,898 cases of hand, foot and mouth disease.
This was more than twice the number of cases for the same period of last year.
Among the cases, 2,475 were local children and 4,423 were migrants."