Nineteen months before a laboratory-acquired infection almost killed a government microbiologist in Beltsville, Maryland in December 2003, workers in a sister government lab near Philadelphia fell ill with the same potentially fatal bacterial illness,
Mechanical engineer Joseph Sites and mechanic Johnny Morphew, workers at the US Department of Agriculture's (USDA) Food Safety Intervention Technologies Research Unit in Wyndmoor, Pa., fell ill in May 2002 after Sites helped perform an experiment where they sprayed