The seroprevalence of canine dirofilariosis in dogs in the eastern coastal areas of China

Abstract

Background and objectives: The present study was carried out to assess the presence of canine Dirofilaria immitis infection in pet dogs in China. Materials and methods: From October 2018 to November 2019, a total of 216 sera were collected from pet hospitals in Shandong, Jiangsu, Shanghai, Zhejiang, and Fujian regions of Eastern China. The sera were tested by using a commercial canine heartworm antibody ELISA test kit. Results: 70.8% of the pets had significant clinical symptoms resembled to heartworm infection; the overall dirofilariosis positivity found was 12.5% (27/216); Significant positive rates differences were observed between symptomatic and asymptomatic dogs (P 0.05). Furthermore, the prevalence detected in summer (28.2%) was significantly higher than in other seasons (P 0.05). Conclusions: Altogether, these results suggest that an epidemic of dirofilariosis exists in eastern coastal China, as such preventive measures should be taken to control the spread of dirofilariosis to reduce the risk of human and pet infection with heartworm.

Keywords

• Dirofilaria immitis
• Seroprevalence
• Dog
• Eastern China