| chancroid, primary syphilis, genital herpes, and lymphogranuloma venereum in antananarivo, madagascar. | ulcer material from consecutive patients attending clinics in antananarivo, madagascar, was tested using multiplex polymerase chain reaction (m-pcr) to detect treponema pallidum, haemophilus ducreyi, and herpes simplex virus. sera were tested for syphilis and for igg and igm antibodies to chlamydia trachomatis by microimmunofluorescence testing (mif). by m-pcr, 33% of 196 patients had chancroid, 29% had syphilitic ulcers, and 10% had genital herpes; 32% of the ulcer specimens were m-pcr negative ... | 1999 | 10479178 |