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.
Signals triggered by the Farrington detection algorithm for the syndrome ‘Severe Abdominal Pain’ at the Accident and Emergency department in Perth. Observed counts for the syndrome ‘Severe Abdominal Pain’ (—) crossed the statistical detection threshold (- - - -) on 7 July 2006; · · · · ·, expected syndrome counts. This signal reflected a true cluster of gastroenteritis in police and security officers at the Summit venue. The signal on 10 July was a false alarm.
