Most importantly, the prevalence of helminth infections in the period from 2005 to 2008, and then in subsequent years (2009–2011) showed a clear trend of declining prevalence in Qatar.
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Socio-demographic influences on the prevalence of intestinal parasitic infections among workers in Qatar.
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The sentences
Prevalence was highest among uneducated subjects (15.2%) and also among those whose parents were illiterate (14.6% in both cases) and this was a highly significant finding.
The Mother’s job had borderline significance (highest in those with no job).