Campylobacteriosis in Norway, 2001: incidence still rising

Campylobacter infections notified to the Meldingssystem for smittsomme sykdommer (MSIS, National Surveillance System for Infectious Diseases) in Norway increased by 24% from 2000 to 2001, from 2331 cases in 2000 to 2890 cases in 2001 (1). This was a continuation of the increasing trend that has been evident since the mid-90s (figure 1). Of the 2890 campylobacteriosis cases notified in 2001, 20% (552 cases) were admitted to hospital, and no deaths were reported. Fifty per cent of the infections in 2001 were reported as having being acquired abroad (1441 imported cases) and 43% (1246 cases) in Norway. For the remaining cases, information about the place of infection was not available. The largest increase was observed among domestic cases, which rose by 38% compared with the previous year, whereas infections acquired abroad increased by 12%.