Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

This page is a historical archive and is no longer maintained.

For current information, please visit

Press Release

For Immediate Release: September 30, 2009
Contact: Division of News & Electronic Media, Office of Communication
(404) 639-3286

Bacterial Co-Infections Common In Fatal Cases of Influenza

Many people who have died from 2009 H1N1 influenza in the United States had co-infections with a common bacteria (Streptococcus pneumoniae, or pneumococcus) which likely contributed to their death, according to a report published in the Centers for Disease Control and Prevention's (CDC) Morbidity and Mortality Weekly Report. CDC is reminding people of the importance of being vaccinated against this common bacterium.

"Our influenza season is off to a fast start and unfortunately there will be more cases of bacterial infections in people suffering from influenza," said CDC Epidemiologist Dr. Matthew Moore. "It's really important for people, especially those at high risk for the serious complications from influenza, to check with their provider when they get their influenza vaccine about being vaccinated against pneumococcus."

The CDC report included an analysis of specimens taken from 77 fatal cases of 2009 H1N1. Bacterial co–infections, including some caused by Streptococcus pneumonia, were noted in about a third of those cases. CDC's recommendations for vaccination against Streptococcus pneumonia are listed below.

  • All children <5 years of age should receive pneumococcal conjugate vaccine according to current recommendations (
  • In addition, the 23–valent pneumococcal polysaccharide vaccine (PPSV23) should be administered to all persons 2-64 years with high risk conditions and everyone 65 years and older (

The entire MMWR report can be found at


CDC 24/7 – Saving Lives. Protecting People. Saving Money Through Prevention. Learn More About How CDC Works For You…
Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    TTY: (888) 232-6348
  • Contact CDC-INFO The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #