Early Onset Bacteria Case Study

By analytic epidemiology, ventilator-associated pneumonia develops in mechanical ventilation patients through artificial airways. It is called an “early-onset” if the infection occurs between 48 to 72 hours (Hooser, 2002). Bacteria of the early onset are antibiotic sensitive strains and are most common in ICU settings. The early onset bacteria are usually: staphylococcus aureus, hamophulus influenzae, or streptococcus pneumoniae. Nosocomial pneumonia that occurs after 72 hours of mechanical ventilation can be caused by multiple organisms. This multiflora, antibiotic resistant organisms are: methicillin resistant staphylococcus aureus (mrsa), pseudomonas aeruginosa, and acinetobacters.