Urinary Tract Infections in Pregnancy

Michael Melia, M.D.

PATHOGENS

Frequent: Escherichia coli (80-85%)
Less common but not rare: Staphylococcus saprophyticus, Group B Streptococcus, other Enterobacteriaceae, Enterococcus spp.
Uncommon: P. aeruginosa, group D streptococci, Ureaplasma spp., Mycoplasma spp., H. influenzae, M. tuberculosis
Chlamydia trachomatis can cause urethritis with dysuria and pyuria but is not associated with cystitis or acute pyelonephritis.

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