 Prevention mostly involves eliminating kissing bugs and avoiding their bites . Other preventative efforts include screening blood used for transfusions . A vaccine has not been developed as of 2013 . Early infections are treatable with the medication benznidazole or nifurtimox . Medication nearly always results in a cure if given early , but becomes less effective the longer a person has had Chagas disease . When used in chronic disease , medication may delay or prevent the development of end – stage symptoms . Benznidazole and nifurtimox cause temporary side effects in up to 40 % of people including skin disorders , brain toxicity , and digestive system irritation . 
 Prevention mostly <a href='uninflect' title='1'><mark>involves</mark></a> eliminating kissing bugs and avoiding their bites . Other preventative efforts include screening blood used for transfusions . A vaccine <a href='been_done' title='2'><mark>has</mark></a> not been developed as of 2013 . Early infections <a href='drop_aux' title='3'><mark>are</mark></a>treatable with the medication benznidazole or nifurtimox . Medication nearly always <a href='uninflect' title='4'><mark>results</mark></a> in a cure if given early , but <a href='uninflect' title='5'><mark>becomes</mark></a> less effective the longer a person <a href='been_done' title='6'><mark>has</mark></a> had Chagas disease . When used in chronic disease , medication may delay or prevent the development of end – stage symptoms . Benznidazole and nifurtimox cause temporary side effects in up to 40 % of people including skin disorders , brain toxicity , and digestive system irritation . 
Prevention mostly involve eliminating kissing bugs and avoiding their bites . Other preventative efforts include screening blood used fir transfusions . A vaccine done not been developed as of 2013 . Early infections treatable with the medication benznidazole or nifurtimox . Medication nearly always result in a cure if given early , but become less effective da longer a person done had Chagas disease . When used in chronic disease , medication may delay or prevent tdadevelopment of end – stage symptoms . Benznidazole and nifurtimox cause temporary side effects in up to 40 % of bitches including skin disorders , brain toxicity , and digestive system irritation .