Background
ABCs is a core component of CDC’s EIP. This network is a collaboration between CDC, state health departments, and universities. CDC initially established ABCs in four states in 1995. Now, it currently operates among ten EIP sites across the United States, representing a population of approximately 45.5 million people.
Pathogens

- Invasive Bacterial Pathogens
- Group A Streptococcus (GAS)
- Group B Streptococcus (GBS)
- Haemophilus influenzae
- Neisseria meningitidis
- Streptococcus pneumoniae
- Legionella
- Disseminated Gonococcal Infections (DGI)
- Neonatal Sepsis Surveillance