Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Bacterial STDs 1Sexually transmitted diseases“Venereal Diseases” Example Bacterial STDsGonorrheaSyphilisChlamydiaExample Viral STDsHerpesgenital wartsHIVQuestionBacterial STDs 2How do bacterial STDs cause infection?UrethraFallopian tubesTestis and ovariesPIDQuestionBacterial STDs 3What are characteristics of:Gonorrhea & ChlamydiaChlamydia most commonin males-- thick, yellowish pusIn females-- vaginal irritation, discharge, etc…Syphilis3 stagesPrimary (1O) syphilis‘chancre’ lesionSecondary (2O) syphilisrashTertiary syphilisQuestionBacterial STDs 4A Souvenir of LondonBought a souvenir in Londongot to hide it from my mum.Can't declare it at the customs,but I'll have to take it home.Tried to keep it confidential,but the news is leaking out.Got a souvenir of London.There's a lot of it about.Yes I've found a bit of London,and I'd like to lose it quick.Got to show it to my doctor,'cos it isn't going to shrink.Want to keep it confidential,but the truth is leaking out.Got a souvenir of London.There's a lot of it about.by Procol Harum, 1973ASoLBacterial STDs 5Viral STDsHow are viruses different from bacteria?Why are viral diseases more difficult to treat?Bacterial STDs 6Viral STDsHerpes (Herpes simplex virus)HSV-I : oral fever blistersHSV-II: genital herpesHuman papilloma virusesgenital wartscervical cancerHIVAttacks cells of the immune system-- T-cellsBacterial STDs 7AIDSWhat are the clinical stages of an HIV infection?1. Acute symptomatic2. Chronic asymptomatic3. AIDSThere is no cureWhat about a vaccine?QuestionBacterial STDs 8How does HIV cause death?-- AIDS-associated diseasesBacterial STDs 9AIDS EpidemiologyIncidenceTransmissionHIV-I vs HIV-IICost of AIDS drugsWhat about an AIDS