RT Book, Section A1 Ryan, Kenneth J. SR Print(0) ID 1185633576 T1 Legionella and Coxiella T2 Sherris & Ryan's Medical Microbiology, 8th Edition YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781260464283 LK accessmedicine.mhmedical.com/content.aspx?aid=1185633576 RD 2024/04/19 AB The death toll in the outbreak of the mysterious respiratory disease in Philadelphia rose by two to 25 as medical detectives accelerated efforts today to seek a chemical or poison as the possible cause.—The New York Times, August 7, 1976