All of the following are sexually transmitted, except
Candida albicans
Echinococcus
Molluscum contagiosum
Treponema pallidum
Echinococcus granulosus is dog tapeworm. It is not an STD. Trichomonas is the only parasite causing STD. Molluscum contagiosum is a virus causing STD, whereas candida albicans is a fungus causing STD and T.pallidum is a bacteria causing STD Ref: Ananthanarayan& Paniker&;s textbook of microbiology, 9th edition.
miscellaneous