[Investigation of infections in market-available marine fish in Dongtai City].

OBJECTIVE

To understand the situation of infection of in market-available marine fish in Dongtai City, so as to provide the evidence for the assessment of the risk of human infections.

METHODS

Raw and fresh marine fish caught in the sea of Dongtai City for sale were collected in 2018. The fish were weighted and dissected for the identification of , and the prevalence and intensity of infections were calculated. In addition, the correlation between the weight of -infected marine fish and the infection intensity of was examined.

RESULTS

There were four species of marine fish infected with , including , , and . Among the 149 fish samples, there were 78 with infections, with a prevalence rate of 52.35%. The prevalence of infection was 100.00% (28/28), 30.00% (9/30), 0 (0/30), 53.33% (16/30) and 80.65% (25/31) in , , cuttle fish, and , respectively. A total of 1 049 worms were collected, and the overall intensity of infection was 13.45 worms per fish. Spearman correlation analysis showed a positive correlation between the weight of and the intensity of infection ( = 0.38, = 0.047), and no correlation was found in other fish species.

CONCLUSIONS

There is a high rate of infection in marine fish along the offshore areas of Dongtai City. Intensification of health education is required and healthy and safe dietary habits are encouranged.