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.
Spatial clustering. Results of spatial analysis showing standardized incidence ratios (SIR) with 95% confidence intervals (95% CIs) for each county (A), a country-wide spatial map of SIR (B), and the location of all seven cases encountered in County Donegal (C).
