Ryan is a staff Physician and Pediatrician at the Massachusetts General Hospital . He is Board certified in both Internal Medicine and Infectious Diseases , and has expertise in global infectious diseases and tropical medicine , including clinical parasitology , virology , bacteriology and mycology . Ryan is the Director of Global Infectious Diseases at Massachusetts General Hospital , and in 2006 isolated a new bacterial species ( '' Bartonella rochalimae ) '' in the blood of a woman with fever and splenomegaly who had recently been in Peru . The bacterium was characterized with colleagues at the University of California at San Francisco and the Centers for Disease Control and Prevention . Ryan served with the Massachusetts General Hospital field deployment team aboard the USNS Mercy hospital ship in Banda Aceh , Indonesia following the December 26 , 2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
Edward Thomas Ryan