Onchocerciasis in Ecuador: changes in prevalence of ocular lesions in Onchocerca volvulus infected individuals over the period 1980-1990

Memórias do Instituto Oswaldo Cruz

Philip J Cooper¹  Roberto Proaño¹  Carlos Beltran¹  Mariela Anselmi¹  Ronald H Guderian¹ 

[1] ,Hospital Vozandes Onchocerciasis Control Programme Quito,Ecuador

关键词: Ecuador;    ocular infectious disease;    filariasis;   

DOI  :  10.1590/S0074-02761996000200004

来源: SciELO

【 摘 要 】

Trends in prevalence rates of onchocercal ocular lesions were examined over the period 1980 to 1990 using data from two cross-sectional surveys. There was evidence for increasing prevalence of anterior chamber microfilariae, iridocyclitis, optic atrophy, and chorioretinopathy. Large increases in prevalence, in particular, were seen for posterior segment lesions: optic atrophy increased from 2.7% to 6.4% and chorioretinopathy from 8.8% to 35.6%. Greatest increases in these lesions were seen in the Chachi which was attributed to the large increases in prevalence of microfilariae in the anterior chamber particularly in those aged 30 years or greater. The study findings suggest that ocular onchocerciasis is evolving in parallel with the well documented parasitological changes.

【 授权许可】

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