Epidemiological data on notifications of Campylobacter jejuni infections is given for the Christchurch health district area. The number of notifications rose steadily to a peak of 883 cases in 1987 (rate 261 per 100,000 population). Christchurch shows consistently higher rates than the rest of New Zealand. Peak incidence is in the 0-4 age group; there is a high incidence amongst males and in rural areas; peak incidences in spring/summer; occupational risks have not been identified; chicken consumption is high amongst the sufferers, but statistical significance uncertain. The major association identified amongst campylobacter cases is a household contact with dogs. This has a risk factor of 1.25 to 2 times.