In North America, approximatley 1.3 per 100,000 children are affected per year.
In adults, the incidence is between 1 and 4 per 100,000 per year. December is observed to be the month with highest number of cases whilst April is the least. Males are more commonly affected with<unk>  in USA than females. The male to female ratio is approximately 3:2.  The disease used to be mostly found in pediatric age group between 3 to 5 years. However, recent trend favors adults as most commonly affected individuals with a mean age of 44.94 years. Recent data suggest an increase in those between 45 to 64 years old as well as those over 85 years whilest those below 18 years is decreasing. In USA,<unk>  is more prevalent in the caucasian race in urban communities accounting for over 2/3rd of all<unk>  admissions.<unk>  occurs more commonly in developing countries.
Epiglottitis epidemiology and demographics
Laryngitis epidemiology and demographics
Adenoiditis epidemiology and demographics
Rhinitis epidemiology and demographics
Pharyngitis epidemiology and demographics
Croup epidemiology and demographics
Strep throat epidemiology and demographics
Tonsillitis epidemiology and demographics