Hung Nguyen-Viet

Lan Anh Nguyen Thi

Mayer-Scholl, Anne

Nga Vu Thi

Ngoc Pham Thi

Unger, Fred

English

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Regional symposium on research into smallholderpig production, health, and pork safetyHanoi, 27-29 March 2019Regional symposium on research into smallholderpig production, health, and pork safetyHanoi, 27-29 March 20191National Institute of Veterinary Research, Vietnam ; 2Federal Institute for Risk Assessment,  National Reference Laboratory for Trichinellosis, Germany; 3International Livestock Research Institute, VietnamRe-emerging Trichinella seroprevalence in Ban pigs raised by ethnic minorities of Hoa Binh provinceNga Vu Thi1, Anne Mayer-Scholl2, Ngoc Pham Thi1, Lan Anh Nguyen Thi1, Hung Nguyen Viet3, Fred Unger3Trichinellosis has a serious impact on public health and agriculturalsystems in lesser developed areas where pigs are raised for consumptionunder traditional husbandry (1). Despite several studies of the diseaseamong humans and pigs being documented (3 & 4), no information isavailable on the present Trichinella sero-prevalence in indigenous pigs inHoa Binh province, North Vietnam. The aim of this study was to investigatethe Trichinella sero-prevalence in indigenous pigs and to improvemanagement and safe pork consumption for the ethnic group in Hoa Binhprovince.The study was conducted in 2018 in Da Bac district which has the highestpig population among all districts of Hoa Binh province. 352 indigenous pigsfrom six selected communes were sampled along with data collection of pigraising, age, and gender. All serum samples were tested for Trichinellaantibodies using excretory/secretory antigen (AG)-ELISA.Materials and methodsOf the 352 indigenous pigs, 48 were positive (13.6%; 95% CI: 35.3 - 60.6) inall communes. The result did not show any significant difference ofseroprevalence among selected communes (P = 0.39) and between twotypes of pig keeping: roaming and semi-free roaming pigs (P = 0.79). Sero-prevalences were higher in female (17% positive, 35/205) compared tomale pigs (8.8% positive, 13/147) (OR = 2.12; 95% CI: 1.07 - 4.17; P = 0.029).Pigs older than 6 months of age were more likely to be seropositive thanpigs less or equal 6 months, with 19% (29/152) and 9.5% (19/200),respectively (OR = 2.24; 95% CI: 1.20 - 4.18; P = 0.011).The study provides the first data on Trichinella seroprevalence in indigenouspigs from ethnic minorities in Hoa Binh province. The roaming/semhygienicconditions of pig management is poor and can be a risk factors for thecirculation of parasitic disease in indigenous pigs (2). Trichinellosis maypose a serious threat to pig production/consumption in indigenous pigs.The inhabitants living in these areas should be made aware of the risk ofdisease and work towards making pork safer for the consumption. Thefarmers must be encouraged to adopt adequate livestock-managementpractices. In addition, continued surveillance of Trichinella infection,including reinforcement of meat inspection, and in other animals isrecommended.This study is funded by the Federal Ministry of Economic Cooperationand Development Germany (BMZ), co-funded through CGIARResearch Program on Agriculture for Nutrition and Health (A4NH),and implemented by the International Livestock Research Institute(ILRI) and National Institute of Veterinary Research (NIVR).(1) Conlan, J.V., Sripa, B., Attwood, S., Newton, P.N., 2011. A review of parasiticzoonoses in a changing Southeast Asia. Vet. Parasitol. 182, 22-40.(2) Thi, N.V., De, N.V., Praet, N., Claes, L., Gabriel, S., Dorny, P., 2013.Seroprevalence of trichinellosis in domestic animals in northwestern Vietnam. Vet.Parasitol. 193, 200-205.(3) Unger F, Chau Thi Minh Long and Nguyen Viet Khong. Prevalence oftrichinellosis and cysticercosis in indigenous pigs from ethnic minorities forselected communes in the Central Highlands (Dak Lak). Nairobi, Kenya: ILRI; 2016.(4) Van, D.N., Thi, N., V, Dorny, P., Vu, T.N., Ngoc, M.P., Trung, D.D., Pozio, E., 2015.Trichinellosis in Vietnam. Am. J. Trop. Med. Hyg. 92, 1265-1270.IntroductionReferencesResultsAcknowledgmentsDiscussion and conclusions Ban pigs in Hoa Binh province, Vietnam (photo credit: ILRI/Hanh Le)Fig 2. Study map showing sampled communes in Da Bac district of Hoa Binh province

Re-emerging Trichinella seroprevalence in Ban pigs raised by ethnic minorities of Hoa Binh province

https://cgspace.cgiar.org/bitstream/10568/101914/1/Trichinella%20seroprevalence.pdf

Re-emerging Trichinella seroprevalence in Ban pigs raised by ethnic minorities of Hoa Binh province

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