Surveillance

National Notifiable Diseases Surveillance System

National surveillance for invasive Haemophilus influenzae, including type b or Hib, disease is conducted through the National Notifiable Diseases Surveillance System (NNDSS). NNDSS is a computerized public health surveillance information system that provides CDC with weekly data regarding cases of nationally notifiable diseases. Non-invasive H. influenzae disease is not nationally notifiable. Learn more about NNDSS.

Active Bacterial Core surveillance

Invasive H. influenzae, including Hib, disease is also tracked with active laboratory-based surveillance. This surveillance is conducted by the Emerging Infections Program's Active Bacterial Core surveillance (ABCs) to:

• Determine the incidence and epidemiologic characteristics of invasive H. influenzae disease
• Monitor impact of the Hib vaccination program
• Detect possible emergence of disease due to non-type b H. influenzae
• Determine appropriate verification and validation criteria for serotyping

View ABCs annual reports for H. influenzae disease.