Modeling the burden of disease for cattle.
Salih, Omran Ahmed Mohamed.
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Summary measures of human population health (SMPH) represents approaches to measuring the burden of disease. These approaches are divided into two classes: health expectancies and health gaps. A health gap model approach called disability adjusted life years (DALYs) was proposed by the World Health Organization (WHO) to assess the burden of disease on human populations. DALYs are the sum of the years of life lost due to premature mortality (YLL) and years of life lost due to disability (YLD). WHO pointed out that DALYs could be adapted to assess the burden of the disease on animal populations. However, to date, little has been done in this regard. This motivated our study which is focused on cattle (cows, oxen and bulls). Using the DALYs approach, we formulated a productivity adjusted life years (PALYs) approach for cattle populations. We used it to assess the burden of ticks and tick-borne diseases (T and TBDs) for cattle populations in 20 villages in the Eastern Cape Province, South Africa. This is the rst time that such an approach has been taken to assess the burden of disease on animals, in particular, for cattle.