Inbreeding or chlamydia? It’s an impossible situation. But it’s a situation that koalas are facing in the suburbs of Sydney, Australia, where low levels of genetic diversity are threatening one of the ...

It's possible, but rare, to pass chlamydia to the throat through an act of oral sex with an infected man. Symptoms usually show up one to three weeks after infection, if they appear at all.

Inbreeding or chlamydia? It's an impossible situation. But it's a situation that koalas are facing in the suburbs of Sydney, Australia, where low levels of genetic diversity are threatening one of ...