Maureen S Kolasa1, Nicole Alexopoulos, Pamela Diaz
2, Jacqueline Kellachan, Mary Jane Lowrey, Barbara Shelton, Rafael Harpaz, and Mark Papania
3. (1) NIP, CDC, 1600 Clifton Rd E61, Atlanta, GA, USA, (2) Chicago Dept. Public Health, Chicago, IL, USA, (3) Centers for Disease Control and Prevention, National Immunization Program, Chief Measles Elimination Activity, CVPDB, 1600 Clifton Road, NE, MS E-61, Atlanta, Georgia, USA
KEYWORD1:
measles, surveillance
BACKGROUND:
Endemic measles, if it occurs in the United States, will most likely be found in major cities because large populations are required to sustain transmission and importations of measles virus are most frequent in cities.
OBJECTIVE:
Describe measles surveillance systems in five cities (Chicago, Houston, Los Angeles, Miami, New York City) during 1995 - 1999.
METHOD:
Health departments described general characteristics of their surveillance systems, including the passive and active components, as well as specific data on suspected and confirmed measles cases.
RESULT:
In these cities a passively reported case activates the system to search for susceptible contacts, identify other cases, and take action to prevent more cases. In 1995 -1999, 1363 suspected measles cases were investigated in these cities. Only 58 were confirmed as measles (0.24 cases\100,000 people) and the majority (57%) of the confirmed cases were imported or linked to an importation. Most (81%) suspected cases that met the case definition had a complete case investigation, including a laboratory test for measles.
CONCLUSION:
We conclude that surveillance in these five cities shows no evidence of endemic measles transmission.
LEARNINGOBJECTIVES:
At the end of this presentation, conference attendees will be able to describe 3 characteristics of measles surveillance systems in these 5 cities.
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