Health screening strategies for international air travelers during an epidemic or pandemic.

Air travelers can carry an infectious disease's pathogenic microorganism in their bodies and spread the disease from one country to another in a few days. To delay the spread, health screening stations may be set up at airport terminals to screen travelers. This research tested three different health screening strategies, each with a different combination of screening stations at trip origins, destinations and connecting airports.

Helicobacter pylori DNA in gallbladder tissue of patients with cholelithiasis and cholecystitis.

Background: Earlier reports on the detection of H. pylori DNA in gallbladder tissue of patients with cholelithiasis and cholecystitis gave discordant results. Our aim was to detect the presence of H.