Seroprevalence of canine heartworm disease (Dirofilaria immitis) on Tenerife Island: an epidemiological update

Blood samples from 823 dogs were tested for circulating Dirofilaria immitis antigen during a 1-year period (May 2002 to May 2003) on Tenerife Island, Canary Islands, Spain. Seroprevalence of heartworm infection was 21%. Heartworm infection was similar in males and females and was more common in dogs aged &rt; 6 years. Distribution of infection in varying climatic zones was not statistically different