| survey of canine heartworm in the city of recife, pernambuco, brazil. | six hundred and eleven random-source dogs (338 male, 273 female) one year of age or older, from six sections of the city of recife, pernambuco, were examined antemortem for circulating microfilariae dirofilaria immitis and dipetalonema reconditum adult heartworm (d. immitis) antigen, and examined postmortem for adult heartworms. the prevalence of heartworm infection was 2.3% (14/611), as determined by necropsy for adult worms, and 1% (6/611) had circulating microfilariae of d. immitis; thus, 57. ... | 1999 | 10464398 |