梅毒
Syphilis
The first discovered venereal disease
What is syphilis?
Treponema-pallidum(苍白密螺旋体)
SyphilisisasexuallytransmittedinfectioncausedbythebacteriumTreponema [trep'ni:m] pallidum ['pli:dm] subspeciespallidum.Thesignsandsymptomsofsyphilisvarydependinginwhichofthefourstagesitpresents(primary,secondary,latent,andtertiary)
route of transmission
Syphilis is transmitted primarily by sexual contact or duringpregnancyfrom a mother to her fetus; the spiroche ...


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