A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells.
medical cause of Tonsillitis
medical cause of Sinusitis
medical cause of Conjunctivitis
symptom of Peritonsillar abscess
complications of Tonsillitis
medical cause of Epiglottitis
symptom of Tonsillitis
causes of Tonsillitis