The isolation of Neisseria species from unusual sites.

The isolation of N. gonorrhoeae from the pharynx of four patients and N. meningitidis from the genital tract of six patients is described. Sexual transmission seemed the most likely means of acquiring these organisms. Three out of four patients harbouring gonococci in the pharynx were asymptomatic, while four of six patients with genital meningococci were symptom-free. The isolation of meningococci from the genital tract coincided with an unusually high incidence of meningococcal disease in the community.