Campylobacter — New Zealand
In August 1998, an outbreak of campylobacteriosis occurred in one municipality in northern Finland. A 10 percent random sample of residents (population 15 000) was selected through the National Population Registry for a survey conducted by using postal questionnaires. Cases were defined as residents of the municipality with onset of acute gastroenteritis from 1 to 20 August 1998. Of 1167 respondents (response rate 78 percent), 218 (18.7 percent) met the case definition. Drinking
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