| Literature DB >> 17690408 |
Kim A Lindblade1, Byron Arana, Guillermo Zea-Flores, Nidia Rizzo, Charles H Porter, Alfredo Dominguez, Nancy Cruz-Ortiz, Thomas R Unnasch, George A Punkosdy, Jane Richards, Mauricio Sauerbrey, Julio Castro, Eduard Catú, Orlando Oliva, Frank O Richards.
Abstract
To eliminate transmission of Onchocerca volvulus, semiannual mass treatment with ivermectin (Mectizan; donated by Merck & Co) has been underway in Guatemala since 2000. We applied the 2001 World Health Organization (WHO) elimination criteria in the Santa Rosa focus of onchocerciasis transmission in Guatemala (10,923 persons at risk). No evidence of parasite DNA was found in 2,221 Simulium ochraceum vectors (one-sided 95% confidence interval [CI], 0-0.086%), and no IgG4 antibody positives to recombinant antigen OV16 were found in a sample of 3,232 school children (95% CI, 0-0.009%). We also found no evidence of microfilariae in the anterior segment of the eye in 363 area residents (95% CI, 0-0.08%). Our interpretation of these data, together with historical information, suggest that transmission of O. volvulus is permanently interrupted in Santa Rosa and that ivermectin treatments there can be halted.Entities:
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Year: 2007 PMID： 17690408
Source DB: PubMed Journal: Am J Trop Med Hyg ISSN： 0002-9637 Impact factor: 2.345