Table 1.

Space–time clusters of autochthonous hepatitis A cases possibly originating from a local environmental source of contamination* in the département of Doubs, France, 1999–2002

SIR, Standardized incidence ratio; CI, confidence interval.

^*These cases corresponded to patients with a positive serology for IgM anti-hepatitis A virus (HAV) of whom patients presenting a myeloma, or having travelled to a HAV-endemic country were excluded.