Bacterial STDs 1

Sexually transmitted diseases

“Venereal Diseases”

Example Bacterial STDsGonorrhea

Syphilis

Chlamydia

Example Viral STDsHerpes

genital warts

HIV

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Bacterial STDs 2

How do bacterial STDs cause infection?

UrethraFallopian tubesTestis and ovariesPID

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Bacterial STDs 3

What are characteristics of:Gonorrhea & Chlamydia

Chlamydia most common

in males-- thick, yellowish pus

In females-- vaginal irritation, discharge, etc

…Syphilis

3 stagesPrimary (1O) syphilis

‘chancre’ lesionSecondary (2O) syphilis

rashTertiary syphilis

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Bacterial STDs 4

A Souvenir of London

Bought 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, 1973 ASoL

Bacterial STDs 5

Viral STDs

How are viruses different from bacteria?

Why are viral diseases more difficult to treat?

Bacterial STDs 6

Viral STDs

Herpes (Herpes simplex virus)HSV-I : oral fever blistersHSV-II: genital herpes

Human papilloma virusesgenital wartscervical cancer

HIVAttacks cells of the immune system

-- T-cells

Bacterial STDs 7

AIDS

What are the clinical stages of an HIV infection?

1. Acute symptomatic

2. Chronic asymptomatic

3. AIDS

There is no cure

What about a vaccine?

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Bacterial STDs 8

How does HIV cause death?-- AIDS-associated diseases

Bacterial STDs 9

AIDS Epidemiology

Incidence

Transmission

HIV-I vs HIV-II

Cost of AIDS drugs

What about an AIDS vaccine??

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