Croup is a most commonly caused by viruses but it could be due to other causes as well, such as bateria, allergens and inhaled irritants.
There are both viral and bacterial forms of pneumonia.
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.
AIDS is caused by a virus, not a bacteria. It is the HIV virus.
a bacteria. the bacteria that causes pneumonia is called pneumoniae.
Warts are caused by viruses, particularly human papillomavirus (HPV). They are not caused by bacteria.
Virus