MRCEM Notes

Infections

Infection TypeMost Common Causative Pathogen
UTIEscherichia coli
Viral MeningitisEnteroviruses
Bacterial MeningitisMeningococcal and Pneumococcal bacteria
CAPStreptococcus Pneumoniae
HAPPolymicobial

Escherichia coli is the most common pathogen responsible for urinary tract infection in the UK.

Meningitis may be viral or bacterial. The most common viral organisms are usually enteroviruses. In bacterial meningitis Meningococcal and Pneumococcal bacteria are the most common causative organisms.

CAP is most often caused by Strep Pneumoniae. Haemophilus influenza is another common causative organism.

In Hospital acquired pneumonia approximately 50% of cases are thought to be polymicrobial. Pseudomonas and staph aureus (including MRSA) are commonly implicated pathogens.
Full-size image