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Table 3 Changes in the epidemiology of O. volvulus infection in the sentinel communities

From: Impact of long-term treatment of onchocerciasis with ivermectin in Ecuador: potential for elimination of infection

Community 1989 survey 2000 survey 2004 survey
  Prevalence (%) MMFL Prevalence (%) MMFL Prevalence (%) MMFL
Corriente Grande 96.3 34.8 4.8 0.045 0.6 0.003
El Tigre 94.2 59.3 14.0 0.131 2.1 0.007
San Miguel 96.3 57.4 5.1 0.582 1.3 0.007
Playa del Oro 66.6 23.6 0 0 0 0
Guayabal 63.6 28.4 0 0 0 0
Angostura 80.6 34.7 0 0 0 0
Naranjal 53.3 21.2 0.3 0.001 0 0
  1. The prevalence of infection and microfilarial load with O. volvulus in the sentinel communities is shown. Surveys were conducted in the seven sentinel communities before ivermectin treatment in 1989 and in 2000 and 2004 after the start of treatment. MMFL, Mean Microfilarial Load (geometric mean mf/mg skin).