hospital acquired pneumonia on top of yellow background

acquired and antibiotic attack background bacteremia bacteria bacterium biology blackboard cells clinic close closeup conceptsn disease education epidemic fever fighting health hospital hospitalacquired illness illustration infection klebsiella life listeria macro medical medicine micro microbes microbiology microorganisms microscope microscopic nosocomial oxytoca pathology physician pneumonia pneumoniae resistance resistant science scientific sepsis sick sickness sign stethoscope superbug threedimensional top word yellow