<P> A sexually transmitted infection present in a pregnant woman may be passed on to the infant before or after birth . </P> <P> The risks and transmission probabilities of sexually transmitted diseases are summarized by act in the table: </P> <Table> <Tr> <Th_colspan="4"> Risk per unprotected sexual act with an infected person </Th> </Tr> <Tr> <Td> </Td> <Th> Known risks </Th> <Th> Possible </Th> </Tr> <Tr> <Th> Performing oral sex on a man </Th> <Td> <Ul> <Li> Throat chlamydia </Li> <Li> Throat gonorrhea (25--30%) </Li> <Li> Herpes (rare) </Li> <Li> HPV </Li> <Li> Syphilis (1%) </Li> </Ul> </Td> <Td> <Ul> <Li> Hepatitis B (low risk) </Li> <Li> HIV (0.01%) </Li> <Li> Hepatitis C (unknown) </Li> </Ul> </Td> </Tr> <Tr> <Th> Performing oral sex on a woman </Th> <Td> <Ul> <Li> Herpes </Li> <Li> HPV </Li> </Ul> </Td> <Td> <Ul> <Li> Throat gonorrhea </Li> <Li> Throat chlamydia </Li> </Ul> </Td> </Tr> <Tr> <Th> Receiving oral sex--man </Th> <Td> <Ul> <Li> Chlamydia </Li> <Li> Gonorrhea </Li> <Li> Herpes </Li> <Li> Syphilis (1%) </Li> </Ul> </Td> <Td> <Ul> <Li> HPV </Li> </Ul> </Td> </Tr> <Tr> <Th> Receiving oral sex--woman </Th> <Td> <Ul> <Li> Herpes </Li> </Ul> </Td> <Td> <Ul> <Li> HPV </Li> <Li> Bacterial Vaginosis </Li> <Li> Gonorrhea </Li> </Ul> </Td> </Tr> <Tr> <Th> Vaginal sex--man </Th> <Td> <Ul> <Li> Chlamydia (30--50%) </Li> <Li> Crabs </Li> <Li> Scabies </Li> <Li> Gonorrhea (22%) </Li> <Li> Hepatitis B </Li> <Li> Herpes (0.07% for HSV - 2) </Li> <Li> HIV (0.05%) </Li> <Li> HPV (high: around 40 - 50%) </Li> <Li> Mycoplasma hominis infection </Li> <Li> Mycoplasma genitalium </Li> <Li> Syphilis </Li> <Li> Trichomoniasis </Li> <Li> Ureaplasma infection </Li> </Ul> </Td> <Td> <Ul> <Li> Hepatitis C </Li> </Ul> </Td> </Tr> <Tr> <Th> Vaginal sex--woman </Th> <Td> <Ul> <Li> Chlamydia (30--50%) </Li> <Li> Crabs </Li> <Li> Scabies </Li> <Li> Gonorrhea (47%) </Li> <Li> Hepatitis B (50--70%) </Li> <Li> Herpes </Li> <Li> HIV (0.1%) </Li> <Li> HPV (high; around 40 - 50%) </Li> <Li> Mycoplasma hominis infection </Li> <Li> Syphilis </Li> <Li> Trichomoniasis </Li> <Li> Ureaplasma infection </Li> </Ul> </Td> <Td> <Ul> <Li> Hepatitis C </Li> </Ul> </Td> </Tr> <Tr> <Th> Anal sex--insertive </Th> <Td> <Ul> <Li> Chlamydia </Li> <Li> Crabs </Li> <Li> Scabies (40%) </Li> <Li> Gonorrhea </Li> <Li> Hepatitis B </Li> <Li> Herpes </Li> <Li> HIV (0.62%) </Li> <Li> HPV </Li> <Li> Syphilis (14%) </Li> </Ul> </Td> <Td> <Ul> <Li> Hepatitis C </Li> </Ul> </Td> </Tr> <Tr> <Th> Anal sex--receptive </Th> <Td> <Ul> <Li> Chlamydia </Li> <Li> Crabs </Li> <Li> Scabies </Li> <Li> Gonorrhea </Li> <Li> Hepatitis B </Li> <Li> Herpes </Li> <Li> HIV (1.7%) </Li> <Li> HPV </Li> <Li> Syphilis (1.4%) </Li> </Ul> </Td> <Td> <Ul> <Li> Hepatitis C </Li> </Ul> </Td> </Tr> <Tr> <Th> Anilingus </Th> <Td> <Ul> <Li> Amebiasis </Li> <Li> Cryptosporidiosis (1%) </Li> <Li> Giardiasis </Li> <Li> Hepatitis A (1%) </Li> <Li> Shigellosis (1%) </Li> </Ul> </Td> <Td> <Ul> <Li> HPV (1%) </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="4"> Risk per unprotected sexual act with an infected person </Th> </Tr>

Who is at risk for contracting a sexually transmitted infection (sti)
find me the text answering this question