a1 Public Health Laboratory, Church Lane, Exeter EX2 5AD
a2 The Food Unit, Public Health Laboratory, Church Lane, Exeter EX2 5AD
a3 Department of Control of Infection, Royal Devon & Exeter Hospital (Wonford), Barrack Road, Exeter EX2 5DW
A point source outbreak of Campylobacter jejuni affected 11 children in a day nursery. Milk consumed by the children was known to have been pecked by magpies on occasions. Illness was significantly associated with consumption of milk on a single morning. Examination of milk from a bottle pecked after the outbreak yielded campylobacters. The level of contamination was approximately six cells of C. jejuni per 500 ml of milk.
(Accepted November 09 1992)