200081 CDC's Integrated Vaccine Surveillance System: Active surveillance for pandemic influenza preparedness

Monday, November 9, 2009: 11:20 AM

Gabriella M. Newes-Adeyi, PhD, MPH , Domestic Health Division, Abt Associates Inc., Bethesda, MD
Jacey Greece, MPH , Domestic Health Division, Abt Associates Inc., Cambridge, MA
Deborah K. Walker, EdD , Domestic Health Division, Abt Associates Inc., Cambridge, MA
Sam Bozeman, MPH , Domestic Health Division, Abt Associates Inc., Cambridge, MA
Nelson Arboleda, MD, MPH , Immunization Safety Office (ISO), Div. of Healthcare Quality Promotion, NCPDCID, Centers for Disease Control and Prevention, Atlanta, GA

As part of its planning for a potential pandemic influenza outbreak, the CDC piloted the Integrated Vaccine Surveillance System (IVSS) to actively monitor vaccine-associated adverse events. IVSS was tested in 2007 in one metropolitan area in HMO-based clinics conducting annual influenza vaccinations. In 2008, an expanded pilot program was implemented with vaccination clinics conducted by health department in two metropolitan areas. This study reports on 2008 pilot program findings.


IVSS allowed vaccinees to self-report mild and severe vaccine reactions through telephone (Integrated Voice Response (IVR)) or a dedicated secure website. Regardless of adverse event status, vaccinees were asked to report daily for 14 consecutive days following vaccination. Information was collected from nonrespondents using Computer Assisted Telephone Interviewing (CATI).


605 vaccinees were recruited into the study, corresponding to an approximate 63% enrollment rate. Ninety percent (n=545) submitted at least one report through IVR, web, or CATI, with a mean of 9 daily reports per participant. Web was the most frequent mode of contact (72% of all contacts), followed by IVR (26%) and CATI (0.2%). Of all participants who reported at least once, 10% reported one or more severe reactions and 61% reported one or more mild reactions.


The pilot program confirmed vaccinee willingness to self-report adverse events and the importance of offering multiple reporting mechanisms. An expanded pilot program should test the feasibility of integrating IVSS into local health department pandemic preparedness and flu vaccination systems.

Learning Objectives:
1)Explain the importance of active monitoring of vaccine-associated adverse events through various modes of reporting. 2)Describe the components of CDCís Integrated Vaccine Surveillance System (IVSS). 3)Discuss findings of the 2008 expanded pilot program and options for expanding the IVSS.

Keywords: Immunizations, Data/Surveillance

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am a public health professional (MPH, PHD) and am the project director for this activity under contract to CDC.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.