during 1984-6 the incidence of stds most often encountered in high risk groups ( syphilis and gonorrhoea ) decreased by 64 % and 41 % respectively , whereas the incidence of diseases most often diagnosed in low risk groups ( condylomata acuminata and genital herpes ) increased by 70 % and 34 % respectively in the same period .
C0036916
stds
C0039128
syphilis