most common cause of community acquired pneumonia
It is thus distinguished from community-acquired pneumonia. It is usually caused by a bacterial infection, rather than a virus. HAP is the second most common nosocomial infection (after urinary tract infections) and accounts for 15â20% of the total. It is the most common cause of death among nosocomial infections and is the primary cause of death in intensive care units. HAP typically lengthens a hospital stay by 1â2 weeks.