Live poultry in backyard flocks are linked to several multistate outbreaks of salmonella infections that have now sickened 212 people in 44 states, federal health officials warned Monday. The most recent illnesses began on June 21, with 88 of the cases reported in the last month, the Centers for Disease Control and Prevention, or CDC, said in an advisory. The federal agency is working with multiple states in investigating several outbreaks of salmonella infections linked to contact with live poultry in backyard flocks, it said. A half-dozen strains of salmonella bacteria have sickened people starting in the middle of February,...