Microscopic view of Treponema pallidum, a.k.a as #syphilis. Humans are the only host for this bacteria. #spiral https://t.co/Y1wcS9KfjR

Microscopic view of Treponema pallidum, a.k.a as #syphilis. Humans are the only host for this bacteria. #spiral http://pic.twitter.com/Y1wcS9KfjR

— ValleySTD (@ValleySTD) August 20, 2016

from Twitter https://twitter.com/ValleySTD