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| Disease | Critical value for epidemic | |
| onset | end | |
| Influenza | 30.0 | 10.0 |
| Pharyngoconjunctival fever | 2.0 | 0.1 |
| Group A streptococcal pharyngitis | 4.0 | 2.0 |
| Infectious gastroenteritis | 20.0 | 12.0 |
| Chickenpox | 7.0 | 4.0 |
| Hand-foot-mouth disease | 5.0 | 2.0 |
| Erythema infectiosum | 2.0 | 1.0 |
| Pertussis | 1.0 | 0.1 |
| Rubella | 1.0 | 0.1 |
| Herpangina | 6.0 | 2.0 |
| Measles | 1.5 | 0.5 |
| Mumps | 6.0 | 2.0 |
Numbers in table indicate no. of cases per week per sentinel clinic and hospital.
