Case definitions
Class 1 diseases and events
Each topic gives the National Surveillance Manual’s case definition, the specimen to take, the laboratory and the timeline for investigation. The same definitions are on the Class 1 poster in every public health facility.
- Accidental poisoning
- Anthrax
- Chikungunya
- Cholera
- Congenital rubella syndrome
- Congenital syphilis
- COVID-19
- Diphtheria
- Encephalitis
- Fever and rash
- Haemophilus influenzae meningitis
- Hansen’s disease
- Hepatitis B
- Hepatitis C
- HIV and AIDS
- Legionnaires’ disease
- Malaria
- Maternal deaths
- Measles
- Meningitis
- Meningococcal meningitis
- Mpox
- Neonatal tetanus
- Ophthalmia neonatorum
- Pertussis
- Plague
- Polio
- Rabies
- Rheumatic fever
- Rubella
- Severe dengue
- Tetanus
- Tuberculosis
- Typhoid fever
- West Nile virus
- Yellow fever
- Zika
Syndromes
The definitions sentinel sites use for weekly reporting.
Source: National Surveillance Manual