<prompt> Neutrophil count below which there is increased risk of nosocomial invasive pulmonary aspergillosis -4000430004200041000-500RL  <response>: Ans. is d i.e., 1000-500RL Invasive aspergillosis is a severe respiratory infection with a moality rate of over 90 in neutropenic patients.It is most often encountered in patients with absolute neutrophil counts of 5004 from leukemia or chemotherapy.Patients undergoing bone marrow transplantation are susceptible to a greater extent than patients with hea, kidney, or liver transplants. 