218-part 2 Flashcards
rate of spread of STI can be mathematically calculated by
efficiency of transmission x rate of partner exchange x duration of infectiousness
how many new std cases each year and how much does it cost
19 million cases, $17 billion
Three things to consider for biology of sexual transmission
status of the mucosal surface, the viral inoculum, and target cells
Important biological factors of transmission for infected donor
pathogen load (stage of illness), presence of another STD, viral phenotype
important biological factors of transmission for the uninfected recipient
presence of an STD, genetic susceptibility, integrity of epithelium, target cells, mucosal immune response
why are men more likely to give HIV
higher concentration of HIV in semen than vaginal secretions
why does having another STD increase your risk for HIV
it increases the number of target cells (langerhans dndritic macrophages) in the genital region
three main consequences of PID
infertility (20%), chronic pain (18%), ectopic pregnancy (9%)
three std’s that can give you cancer
hpv, hep b, HIV
when is transplacental transmission of STDs most common
when STD is acquired later in pregnancy
Can stds be transmitted in breast feeding
yes