Skip Navigation LinksSkip Navigation Links
Centers for Disease Control and Prevention
Safer Healthier People
Blue White
Blue White
bottom curve
CDC Home Search Health Topics A-Z spacer spacer
Blue curve MMWR spacer

Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: Type 508 Accommodation in the subject line of e-mail.

Errata: Vol. 53, Supplement, September 24, 2004

In the MMWR Supplement, "Syndromic Surveillance: Reports from a National Conference, 2003," errors occurred in the report, "Should We Be Worried? Investigation of Signals Generated by an Electronic Syndromic Surveillance System --- Westchester County, New York."

On page 191, in the second paragraph under the section "Westchester County's Syndromic Surveillance System," the first sentence should read, "For each syndrome category, the daily rate, defined as the number of visits grouped in a particular syndrome divided by the number of total visits in all hospital EDs for that day, was analyzed to identify any statistically significant increases." Thereafter in this paragraph, the phrase, "number of visits," should read, "rate."

On page 191, in the second paragraph, the definition of a C3 signal should read, "A C3 signal is generated when the sum of all syndrome rates minus the baseline mean plus 1 standard deviation is greater than two standard deviations of the baseline for the previous 3 days. The C3 signal is illustrated as follows: "å [syndrome rate -- (baseline mean + 1 standard deviation) > 2 standard deviations of the baseline], when >1 day exists when the syndrome rate is greater than the baseline mean + 1 standard deviation."

On page 192, in the second paragraph under the section "Terms Used To Identify and Classify Complaints into Syndrome Categories," information on monitoring for false-negative signals should include, "In addition, all chief complaints that are excluded from classification into a syndrome category should be reviewed periodically to ensure that key regional or facility-specific terminology is not being underrepresented in the search filter."

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

Disclaimer   All MMWR HTML versions of articles are electronic conversions from ASCII text into HTML. This conversion may have resulted in character translation or format errors in the HTML version. Users should not rely on this HTML document, but are referred to the electronic PDF version and/or the original MMWR paper copy for the official text, figures, and tables. An original paper copy of this issue can be obtained from the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, DC 20402-9371; telephone: (202) 512-1800. Contact GPO for current prices.

**Questions or messages regarding errors in formatting should be addressed to

Page converted: 3/31/2005


Safer, Healthier People

Morbidity and Mortality Weekly Report
Centers for Disease Control and Prevention
1600 Clifton Rd, MailStop E-90, Atlanta, GA 30333, U.S.A


Department of Health
and Human Services

This page last reviewed 3/31/2005