Legionnaires' outbreak worsened by chronic health issues in South Bronx

Amado Caballeo listened closely as Mayor Bill de Blasio warned regulars at the Leon Senior Center on East 152nd Street to seek medical treatment if they had flu-like symptoms that could signal Legionnaires' disease. "This is a form of pneumonia and we can treat it with antibiotics," de Blasio said during his Tuesday visit, an attempt to quell fears during the city's largest and deadliest outbreak of Legionnaires' disease. So far, the outbreak has been contained to the South Bronx, where it has killed 12 people and sickened a total of 119. Twenty buildings in and around the cluster zone have tested positive for legionella, the bacteria that causes the disease.