| an outbreak of aseptic meningitis due to echovirus 30 in a high school baseball club--possible role of severe exercise for a high attack rate. | in september 2008, an outbreak of aseptic meningitis caused by echovirus 30 occurred in ota city, gunma. among the 26 people hospitalized, 17 were members of a high school baseball club. the attack rate within the club was as high as 40%. the other 9 patients were either their families or close relatives of the baseball club members, indicating the outbreak was confined to a limited community. although numerous outbreaks of echoviral meningitis have been reported worldwide, those with such a hig ... | 2009 | 19797835 |