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Table 1 Calendar of the baseline and follow-up impact assessments carried out in Naicioná, Colombia

From: Elimination of onchocerciasis from Colombia: first proof of concept of river blindness elimination in the world

Component Baseline assessment First impact assessment Second impact assessment Third impact assessment Fourth impact assessment
Parasitology 1995 1998 2001 2004 2007
Ophthalmology 1996 1998 2001 2006 No
Entomology 1996 1998 2001 2004 2010a
Serology No No 2001 2004 2007
  1. aThe entomological assessment in 2010 was done to confirm the interruption of transmission at the end of the 3-year post-treatment surveillance period