| outbreak of entamoeba histolytica and giardia lamblia infections in travellers returning from the tropics. | of 160 travellers from various regions in italy who had taken part in a five-day organized trip to phuket, thailand, and been accommodated in the same luxury hotel, 17 showed either amebic abscess or colitis. a pretested questionnaire that focused on the consumption of foods and beverages well known to be a source of intestinal infection in endemic areas was available from these 17 patients as well as from 41 out of 74 asymptomatic travellers. stool samples for parasitological examination were a ... | 1992 | 1582688 |