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Mono-parasite infection versus co-infections in Tanzania: the need to revise our research focus.

Parasitic infectious agents in endemic African countries including
Tanzania rarely occurs in isolation and co-infections within a single
host in populations are norms rather than exceptions (Brooker et al.,
2007; Mazigo et al., 2010a; Mboera et al., 2011). Coinfection refers to
a situation in which an individual harbours two or more infections from
different species simultaneously, where as mono-infection refers to a
situation in which an individual harbours only one infection from a
single species (Brooker et al., 2007). Several factors determines the
wide geographical distributions of helminth and protozoan parasites and
they include climate, environment, socio-economic status, human
behaviour and host-specific factors such as genetics, host physiology,
host immunological status and population dynamics (Mwangi et al.,
2007).