Fig. 1.

Prevalence rates of spinocerebellar ataxia clusters in Americas and the Caribbean. a The three main regions of interest in the American continents and the Caribbean. b Spinocerebellar ataxia type 2 (SCA2) in some Cuban municipalities. c Spinocerebellar ataxia type 7 (SCA7) in Southeast Mexico (Veracruz province). d Spinocerebellar ataxia type 3/Machado-Joseph disease (SCA3/MJD) in South Brazil (Rio Grande do Sul state). The background color represents population’s density. Adapted from Global Human Settlement Layer (GHSL), European Commission (http://luminocity3d.org/WorldPopDen/#6/-29.688/-61.282). Consulted in August, 2019