virus
Virus is herpes simplex virus type 2 for genital herpes and type 1 for oral herpes.
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.
It is caused by a virus. It is caused by a virus, so that is why there is no real known cure for Influenza, because we do not have the technology to kill viruses. The best a doctor can do is reduce...