| occurrence of dirofilaria immitis and tick-borne infections caused by anaplasma phagocytophilum, borrelia burgdorferi sensu lato and ehrlichia canis in domestic dogs in france: results of a countrywide serologic survey. | the occurrence of dirofilaria immitis antigen and antibodies against tick-borne pathogens in french dogs has been analysed based on 1,050 blood samples. serum samples of 919 dogs (group a) were sent for a variety of diagnostic investigations, further 131 dogs (group b) were tested for a tentative diagnosis of heartworm disease. all samples were tested for d. immitis antigen. samples in group a were also tested for specific antibodies against three tick-borne pathogens (anaplasma phagocytophilum, ... | 2009 | 19575231 |