Differences in perceived seriousness of onchocerciasis (as determined by “free-listing” and paired comparisons) in 2014 compared to 1991.

Illnesses are listed in order of seriousness (greatest to least) as determined by paired comparison. The ‘(Rank)’ refers to the frequency the illness term was mentioned in the respondents’ free listings. Spanish terms are given in parentheses in italics. Dysentery (disentería), understood as painful diarrhea with blood, is different from diarrhea. URI (resfriado) = upper respiratory infection was not distinguished from influenza (gripe).