Mapping Typhoid Infections Reveals Risk Factors

According to a press release, “The researchers found extensive clustering of typhoid infections in particular locations. Yet, perhaps counter-intuitively for a disease that spreads amongst humans, this clustering was unrelated to the density of the local population. In fact, the study showed that people living near to water spouts, for whom these provide their main source of water, and people living at a lower elevation are at substantially greatest risk of contracting the disease.

Typhoid incidence is likely to be associated with faecal contamination of ground water during the monsoon. As S. paratyphi A (a strain of S. paratyphi found in Nepal) appeared to spread downstream from the main focal point, this would put people living in areas with low elevation at higher risk. These two variables, elevation and water spout proximity, are likely to be interconnected, as the water spouts are more common in low lying areas.”

Source: press release

Sachiye Day, VERTICES intern. sachiye@vertices.com

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