Esther Schelling

A survey of bovine cysticercosis/human taeniosis In Northern Turkana District, Kenya

Bovine cysticercosis is a zoonosis that is mainly of socioeconomic and public health importance. A survey of this disease was carried out in Northern Turkana District, Kenya to estimate the prevalence through both serology and meat inspection, to determine the prevalence of the adult tapeworm in the human definitive host, and to determine risk factors for cattle seropositivity. This information is of public health importance and will be of use in assessing economic losses due to downgrading, refrigeration or condemnation of infested carcasses. The study area was stratified into the three livestock grazing regions of Oropoi to the south, Lokichoggio-Mogilla centrally and Kibish in the north for the purposes of the serological and questionnaire (n = 53 herd owners) data. Five adakaars (grazing units) were selected and 34, 63, 49, 75 and 571 cattle serum samples obtained from these. The slaughter slabs of Lokichoggio and Kakuma were visited and 188 serum samples were obtained from slaughter cattle and compared to results of meat inspection. Human stool samples were collected in each of the three grazing areas and 66, 97 and 78 samples were obtained. The seroprevalence of cysticercosis in cattle was estimated at 16.7% (95% CI 13-20.9%) using a secretory-excretory antigen detection ELISA. There was poor agreement between meat inspection and serology (k = 0.025; p = 0.2797). The prevalence of taeniosis was estimated as 2.5% (95% CI 0.8-5.6%) by microscopy. A backwards elimination logistic regression analysis indicated that the grazing unit (Adakaar), the deworming history of household members and the distance (>2 km) of grazing fields from the homestead were significant explanatory variables for cattle being found to be positive on serology. An intra-cluster correlation coefficient (ICC) of 0.07 (0.02-0.12); p < 0.0001 was calculated for bovine cysticercosis in this area.

Towards Integrated and Adapted Health Services for Nomadic Pastoralists and their Animals: A North–South Partnership

Mobility of pastoralists in arid and semi-arid zones renders access to primary social services difficult. The experiences, local concepts and propositions of nomadic communities of Chad were essential to fill the information gaps on how to provide adapted health services to mobile communities. In Chad, we have taken an iterative, corkscrew-like research and action strategy: a better understanding of the determinants of health and communities’ health priorities – obtained by interdisciplinary collaborations between medicine, anthropology, epidemiology, social geography and microbiology – were integrated in the participatory identification of intervention options out of a range of possible responses by the health and veterinary services. Recommendations from national stakeholder workshops paved the way for implementing and testing new interventions. All stakeholders reviewed outcomes of interventions periodically. The programme provided opportunities for participatory processes and actions that were defined in an open way at the beginning. An appropriate North–South research partnership framework and the long-term commitment of all partners have been crucial in the process of building stakeholders’ ownership. University curricula rarely enable scientists to communicate with other disciplines, and researchers first needed to acquire skills in crossing the boundaries between human and natural sciences and between sectors. We describe here in a chronologic way the elements that led to innovative health and veterinary services for nomadic pastoralists of Chad; such as joint vaccination services of the public health and the livestock sectors and subsequent initiatives that were initiated by the nomadic communities once they began to trust the programme.

Reproductive performance of sows in rural communities of Busia and Kakamega Districts, Western Kenya

This study provided baseline performance of breeding pigs information on local sow productivity that was previously lacking. The objective was to investigate performance of breeding pigs in rural smallholder communities of Western Kenya. A random sample of 288 smallholder farms in Busia and Kakamega districts was selected pigs. The farms were visited three times in the course of the study period, 2006 to 2008. Data on management and productivity were gathered by means of questionnaires administered to sow owners. The average number of sows owned per farm was 1.3±0.6. Sows were bred for an average of 2.18±1.08 days during one estrus. Sows were 12.1±4.5 months old when they farrowed for the first time. They were bred 1.9±1.6 month after piglets were weaned. Sources of breeding boars