http://g1.globo.com/sp/campinas-regiao/jornal-da-eptv-2edicao/videos/t/edicoes/v/pesquisa-mostra-que-risco-de-morte-por-chikungunya-e-maior-que-pela-dengue/6336890/
http://currents.plos.org/outbreaks/article/excess-mortality-related-to-chikungunya-epidemics-in-the-context-of-co-circulation-of-other-arboviruses-in-brazil/