The role of cooking practices in the transmission of the foodborne parasite Taenia solium: A qualitative study in an endemic area of Southern Tanzania

PLoS One. 2022 Oct 5;17(10):e0274877. doi: 10.1371/journal.pone.0274877. eCollection 2022.

Abstract

The pork tapeworm Taenia solium is a zoonotic food-borne parasite endemic in many developing countries causing human cysticercosis and taeniosis as well as porcine cysticercosis. It mainly affects the health of rural smallholder pig farmers and their communities, resulting in lower health status, reduced pork quality, and economic loss due to condemnation of pigs or low pricing of pork. This qualitative study aimed to identify key food related practices linked to consumption of pork at village level, of importance for transmission of taeniosis. We used an interpretivist-constructivist paradigm in a multiple case study of exploratory qualitative research design. Data was acquired through guided and probing interviews with 64 pork cooks, and 14 direct observations in four villages in a T. solium endemic area of Mbeya Region in the Southern Highlands of Tanzania. The study showed that the informants were members of communities of practice through their pork cooking practices, one community of practice for the restaurant cooks and one for the home cooks, learning, sharing, and distributing their cooking skills. Furthermore, the analysis showed that the pork cooks generally had some awareness of there being something undesirable in raw pork, but they had very diverse understandings of what it was, or of its potential harm. Major potential transmission points were identified in restaurants and in home kitchens. It appears that the pork cooks act according to socio-cultural and economic factors guiding them in their actions, including pressure from customers in restaurants, the family values of tradition in the home kitchens, and the culturally guided risk perception and appraisal. These practices might generate potential transmission points. Future research on interventions aimed at preventing the spread of T. solium taeniosis should recognise the importance of tradition and culture in risky food practices.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cooking
  • Cysticercosis* / epidemiology
  • Cysticercosis* / parasitology
  • Cysticercosis* / prevention & control
  • Humans
  • Parasites*
  • Prevalence
  • Qualitative Research
  • Swine
  • Swine Diseases* / epidemiology
  • Taenia solium*
  • Taeniasis* / epidemiology
  • Taeniasis* / prevention & control
  • Tanzania / epidemiology

Grants and funding

This work was funded by the European & Developing Countries Clinical Trials Partnership (EDCTP; grant number DRIA2014-308), project titled: “Evaluation of an antibody detecting point-of-care test for the diagnosis of T. solium taeniosis and (neuro)cysticercosis in communities and primary care settings of highly endemic, resource-poor areas in Tanzania and Zambia, including training of – and technology transfer to the Regional Reference Laboratory and health centers (SOLID)”; and the German Federal Ministry of Education and Research (BMBF; grant number: 01KA1617). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.