So it is my understanding that pregnant women should have no pets then? Cats, dogs.. every animal has its own bacteria that can infect humans. Think of all of the farmer's wives that are living on farms right now and having children while raising chickens and other poultry! And think of people who let their dogs (or even cats) lick their child's cafe and then think that it is so adorable.. Are they committing mass infant abuse by doing so?
My point is; salmonella can be controlled and should not be held over someone's head in coercing them to get rid of their snake when a baby is on the way. Proper hygeine would ensure that no bacteria from the reptiles got onto the baby. But to each their own. if it'd be a case of the snake being ignored or pawned off onto someone else, please sell the snake to someone who can properly care for it.