| the ability of a topical novel combination of fipronil, amitraz and (s)-methoprene to protect dogs from borrelia burgdorferi and anaplasma phagocytophilum infections transmitted by ixodes scapularis. | healthy, purpose-bred laboratory beagle dogs that had not been exposed to ticks and were seronegative for borrelia burgdorferi and anaplasma phagocytophilum were randomly assigned to four groups of eight dogs each. control group 1 was not treated. groups 2, 3 and 4 were treated with a single topical application of a new formulation of fipronil, amitraz and (s)-methoprene (certifect™, merial limited, ga, usa) at 28, 21 or 14 days prior to tick infestation, respectively. each dog was infested with ... | 2011 | 21777736 |