Information about debian acessibility in Brazil

["Lab. eRehab - T.O" <erehabto@hcnet.usp.br>]

Hello,
 My name is Denise, I´m an occupational therapist and I work with persons with
disabilities.
 I saw in the website that you already have somo softwares to improve
acessibility, and I would like to know if there is a person (or group) here in
brazil that is/are working in this project.
  Sometimes we use Ubuntu with our patients (DASHER, GNOME), but I would like to
know more about debian acessibility project.
Thank you, 
Denise R. Tsukimoto