TNF and sexually transmitted disease: Levels of nine cytokines (IL-1β, IL-2, IL-4, 1L-6, 1L-10, 1L-12p70, IL-17A, TNFα and IFN-γ) were measured from plasma and genital samples (urethral swabs in men and cervicovaginal lavage in women) from 61Neisseria gonorrhoeae infected individuals seeking treatment for sexually transmitted infections (STIs) at Casino Health Centre in Nairobi, Kenya.