Trich is not a bacteria or a virus; it is a protozoa. Pubic lice might be considered an STD too, but this is a parasite as in Insect (lice).
Most STD's are caused by Bacteria. To give a few examples: Syphilis, Gonorrhea, Chlamydia... (etc)
Bacteria Virus
Smallpox was a virus.
it is a virus which is also caused of measles
Bacteria and virus
No. HIV is caused by a virus, not a bacteria.
virus
Pneumonia is an inflammation or infection of the lungs most commonly caused by a bacteria or virus. Pneumonia can also be caused by inhaling vomit or other foreign substances.
a bacteria. the bacteria that causes pneumonia is called pneumoniae.
AIDS is caused by a virus, not a bacteria. It is the HIV virus.
Warts are caused by viruses, particularly human papillomavirus (HPV). They are not caused by bacteria.
Impetigo can be caused by the staphylococcus aureus, or the streptococcus pyogenes bacteria.