The Allegheny County Health Department is taking special measures to slow an outbreak of diarrheal illness known as shigellosis. Health Department spokesman Guillermo Cole says shigella infections began to increase countywide last October and there have been 97 cases reported so far this year. That compares to 41 in 2009 and only 12 in 2008. Other parts of the state including neighboring counties are also experiencing shigella outbreaks. Cole says nearly half of the local cases were children 5 or younger.