Most STD's are caused by Bacteria.
To give a few examples: Syphilis, Gonorrhea, Chlamydia... (etc)
Bacteria Virus
Bacteria and virus
No. HIV is caused by a virus, not a bacteria.
virus
It is a 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.
Impetigo can be caused by the staphylococcus aureus, or the streptococcus pyogenes bacteria.
A virus
Virus
Schizophrenia is not caused by a virus or bacteria--it does not and cannot "reproduce". Because it is not caused by a virus or bacteria, it is also not "contagious".