Serosurvey of IgG Antibodies against and in the Population of Attica, Greece.

are the causative agents of murine typhus and cat-scratch disease, respectively. A small-scale survey (N = 202) was conducted in the Attica region, Greece, for determining the prevalence rates of IgG antibodies against and by indirect fluorescence antibody test. IgG against and were present in 17.8% (36/202) and 4.5% (9/202) of the participants, respectively; co-occurring IgG against both and were detected in 3.5% (7/202), whereas only anti- IgG in 14.3% (29/202), and only anti- IgG in 1.0% (2/202). Titres 1/64, 1/128, 1/256, and 1/512, of anti- IgG were identified in 6.4%, 4.5%, 4.5%, and 2.4%, whereas titres 1/40 and 1/80 of anti- IgG were detected in 4.0%, and 0.5%, respectively. A positive association of anti- IgG prevalence with a coastal area featuring a major seaport ( = 0.009) and with younger age ( = 0.046) was identified. The findings of this survey raise concern for exposure of the population of Attica to and , which should be considered in the differential diagnosis when compatible symptoms are present. Our results also suggest that seaports may represent high-risk areas for exposure to spp.