Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Lagged cross-correlation among the proportions of cases positive for gastrointestinal infectious disease for IFH structured data, IFH narrative data, and NYC DOHMH emergency department chief complaint data. A peak to the left of 0 days implies that the left entity in the figure legend preceded the entity on the right. IFH = Institute for Family Health; NYC = New York City; DOHMH = Department of Health and Mental Hygiene.
