[Prevalence of intestinal parasitic infections in nursery schools from Ciego de Avila Province, Cuba. 1989-1993].

1999 
The prevalence of intestinal parasitsm in nursery schools from Ciego de Avila province was annually avaluated during 1989-1993. The percentage of infected children ranged from 16.6% to 31.6%. An increase of frequence of infection was observed from 1991. Protozoa were more predominant than helminths. In the whole five-year period studied Giardia intestinalis had a higher prevalence (19.6%) followed by Entamoeba histolytica (3.0%). The nematode most frequently found was Trichuris trichiura (0.5%).
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