Volume 10, Number 5—May 2004
Research
Syndromic Surveillance in Public Health Practice, New York City
Figure 2
![Trends in emergency department visits for diarrhea and vomiting syndromes, New York City, November 1, 2001–November 14, 2002. Plots show the daily ratio of syndrome visits to other (noninfectious disease) visits. diamonds = citywide signal; triangles = spatial signal by hospital; circles = spatial signal by patient’s home zip code.](/eid/images/03-0646-F2.jpg)
Figure 2. Trends in emergency department visits for diarrhea and vomiting syndromes, New York City, November 1, 2001–November 14, 2002. Plots show the daily ratio of syndrome visits to other (noninfectious disease) visits. diamonds = citywide signal; triangles = spatial signal by hospital; circles = spatial signal by patient’s home zip code.
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