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BioMed Research International
Volume 2013 (2013), Article ID 149890, 4 pages
Research Article

The Hidden Burden of Trichinellosis in Vietnam: A Postoutbreak Epidemiological Study

1Parasitology Section, National Centre for Veterinary Diagnosis, 11/78 Giai Phong, Phuong Mai, Dong Da, Hanoi, Vietnam
2Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, 133 Salisburylaan, 9820 Merelbeke, Belgium
3Parasitology Department, National Institute of Malariology, Parasitology and Entomology, BC 10-200, Tuliem, Hanoi, Vietnam
4Operational Directorate Public Health and Surveillance, Scientific Institute of Public Health, 14 J. Wytsmanstraat, 1050 Brussels, Belgium
5Department of Biomedical Sciences, Institute of Tropical Medicine, 155 Nationalestraat, 2000 Antwerp, Belgium

Received 26 August 2013; Accepted 4 October 2013

Academic Editor: Georgios Theodoropoulos

Copyright © 2013 Nga Vu Thi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A cross-sectional study was conducted in Muong Lat town (Thanh Hoa province, North Vietnam), following the confirmed diagnosis of trichinellosis in six patients from that town who had eaten hunted wild boar meat during the Vietnamese lunar year celebration. All inhabitants who declared to have eaten undercooked or raw wild boar meat at the celebration and showed at least one clinical symptom compatible with trichinellosis were included in the study and blood sampled. Anti-Trichinella IgG were determined by ELISA and Western Blot. Seropositive persons were given appropriate albendazole treatment and were followed up. A total of 100 inhabitants met the inclusion criteria. Among these, 30 (30%) had antibodies to Trichinella. Serologically confirmed cases had fever (90.0%), myalgia (86.7%), facial oedema (63.3%), diarrhoea (53.3%), and pain of the masseter muscles (43.3%). Eosinophilia was detected in 83.3% of these individuals. Clinical symptoms resolved in all patients during albendazole treatment. The results suggest that only a proportion of the trichinellosis cases had sought health care during the outbreak. There is a need to implement surveillance and better diagnosis for trichinellosis and to set up educational programs to prevent infection in North Vietnam.