We monitored by blood culture and immunofluorescence assay (IFA) bartonella infection in one dog and eight cats in a Dining Chair household to determine the prevalence and persistence of the infection as well as its transmissibility to humans.Ectoparasite control was rigorously exercised.During a 3-year period, Bartonella clarridgeiae was recovered from one cat on two occasions, and B.henselae was isolated from Pliers another cat on four occasions.During a 16-month period, B.
vinsonii subsp.berkhoffii was isolated from the dog on 8 of 10 culture attempts.Despite extensive household contact, the pet owner was seronegative to all three species by IFA for Bartonella-specific immunoglobulin G.