Emerging Infections Program (EIP)

Colorado is one of ten sites in the Emerging Infections Program with the Centers for Disease Control and Prevention (CDC). The program collects information on certain infections to learn more about disease patterns and risk factors. We use data from this program to make health recommendations and better understand infectious diseases in Colorado and the rest of the country. There are several different projects within the program.

 Routine data collection

 Active bacterial core surveillance (ABCs)

This project helps us learn more about bacteria that cause serious infections in some people. These include pertussis, legionellosis, invasive Haemophilus influenzae, invasive Neisseria meningitidis, invasive Group A Streptococcus, invasive Group B Streptococcus (GBS), and invasive pneumococcal disease (IPD).


This project helps public health learn more about diseases we get from food and water. These include E. coli O157:H7, Campylobacter, Listeria, Salmonella, Shigella, Yersinia, Vibrio, Cryptosporidium, and Cyclospora.

 Healthcare-associated infections (HAI) surveillance

This project gathers information to help us learn more about bacteria linked to health care settings that can cause infections in some people. These include Clostridium difficile (C.diff), Candida (a type of yeast) in the bloodstream, and bacteria that are resistant to antibiotics.

 Influenza (flu) hospital surveillance

This project helps us learn more about flu such as how many people are hospitalized each year, risk factors for getting sick, and how well the vaccine is working.

 Special projects

  • 13-valent pneumococcal conjugate vaccine effectiveness evaluation among adults 65 years and older” is a study to see how well the PCV13 vaccine is working to prevent people over 65 from getting invasive pneumococcal disease (IPD).
  • Evaluation of Secondary Transmission of B. pertussis among Household Contacts Following 5-day Course of Azithromycin Post-exposure Prophylaxis (PEP).” This study is about learning if certain medicines are preventing people from spreading pertussis.
  • Prevalence of healthcare-associated infections and antimicrobial use in healthcare facilities.” This is a recurring project to determine the burden and types of healthcare-associated infections, and understand antimicrobial use and appropriateness in acute care hospitals and nursing homes.
  • Epidemiology of sepsis project: This recently conducted project reviewed information about cases of sepsis among three hospitals, including risk factors and pathogens involved.
  • The Extended Spectrum Beta Lactamase (ESBL) project is to determine the feasibility of conducting surveillance for ESBL-producing organisms, a type of antibiotic-resistant bacteria.
    • Salmonella, Shigella, and Campylobacter cases are asked about medication use, international travel, and medical care outside of the United States. This information is paired with information about the bacteria to better understand antibiotic resistance. ​

 More information

  • Contact Communicable Disease Branch at 303-692-2700
  • CDC EIP webpage