| DISEASE | INCUBATION PERIOD (DAYS) |
CONTAGIOUS PERIOD (DAYS) |
| Respiratory Infections: | ||
| Bronchiolitis | 4-6 | Onset of cough until 7 days |
| Colds | 2-5 | Onset of runny nose until fever gone |
| Cold sores (herpes) | 2-12 | See Footnote 1 |
| Coughs (viral) or croup (viral) | 2-5 | Onset of cough until fever gone |
| Diphtheria | 2-5 | Onset of sore throat until 4 days on antibiotic |
| Influenza | 1-2 | Onset of symptoms until fever gone |
| Sore throat, strep | 2-5 | Onset of sore throat until 24 hours on antibiotic |
| Sore throat, viral | 2-5 | Onset of sore throat until fever gone |
| Tuberculosis | 6-24 months | Until 2 weeks on drugs (Note: Most childhood TB is not contagious.) |
| Whooping cough | 7-10 | Onset of runny nose until 5 days on antibiotic |
