Spatio-temporal prevalence of porcine cysticercosis in Madagascar based on meat inspection

Abstract

BackgroundTaenia solium cysticercosis is a parasitic meat-borne disease that is highly prevalent in pigs and humans in Africa, but the burden is vastly underestimated due to the lack of official control along the pork commodity chain, which hampers long-term control policies.MethodsThe apparent and corrected prevalences of T. solium cysticercosis were investigated in pork carcasses slaughtered and retailed in Antananarivo (Madagascar), thanks to a 12-month monitoring plan in two urban abattoirs.ResultsOverall apparent prevalence was estimated at 4.6 % [4.2 – 5.0 %]. The corrected overall prevalence defined as the estimated prevalence after accounting for the sensitivity of meat inspection was 21.03 % [19.18- 22.87 %]. Significant differences among geoclimatic regions were observed only for indigenous pigs, with an apparent prevalence estimated at 7.9 % [6.0 – 9.9 %] in the northern and western regions, 7.3 % [6.0 – 8.6 %] in the central region, and 6.2 % [4.7 – 7.8 %] in the southern region. In the central region, where both exotic and indigenous pigs were surveyed, indigenous pigs were 8.5 times [6.7 – 10.7] more likely to be infected than exotic improved pigs. Urban consumers were more likely to encounter cysticercosis in pork in the rainy season, which is a major at risk period, in particular in December. Differences between abattoirs were also identified.ConclusionOur results underline the need for improved surveillance and control programmes to limit T. solium cysticercosis in carcasses by introducing a risk-based meat inspection procedure that accounts for the origin and breed of the pigs, and the season.

Prevalence and economic losses resulting from parasitic zoonosis on swine and ruminants in Ouagadougou abattoir (Burkina Faso)

“…In addition, the prevalence of porcine cysticercosis (0.22%) is similar to that found in southern Senegal (0.1%) and Gambia (0.2%) by Secka et al (2010). However, it is low compared to those obtained in other African countries such as Madagascar (4.6%) (Porphyre et al, 2015); Benin (0.87%) (Goussanou et al, 2014); Kenya (5.6%) (Eshitera et al, 2012) using meat inspection.…”

Are we ready for Taenia solium cysticercosis elimination in sub-Saharan Africa?

“…As transmission of T. solium is socially determined, local human practices may, to a large extend also influence the transmission rates from man-to-pig and from pig-to-man, which is not accommodated in the model (Porphyre et al . 2015; Thys et al . 2015).…”

Prévalence de la cysticercose porcine à <i>Taenia solium</i> (<i>Cysticercus cellulosae</i>) chez les porcs dans l’aire d’abattage de Kinsoundi à Brazzaville

“…La prévalence de cette étude à l'examen post-mortem (1,69%) est faiblement inférieure aux taux de 2,2 % observé par Gonzalez et al (2004). Elle est beaucoup inférieure aux prévalences de 5,6 % et 4,6 % rapportées respectivement par Eshitera et al (2012) au Kenya et Porphyre et al (2015) à Madagascar. Mais elle est supérieure à la prévalence de 0,87 % observée au Bénin par Goussanou et al (2014) cités par Dahourou et al (2018).…”

“…La cysticercose à Taenia solium est une maladie parasitaire transmissible par la viande, très répandue chez les porcs et les humains. Elle est continue la principale cause d'épilepsie en Afrique et occasionne des lourdes pertes économiques de l'élevage des porcs (Porphyre et al, 2015).…”