[Impact on social networks after announcement of a case of Hansen's disease in an immigrant in Chile].

Background: Hansen's disease (HD) is a curable disease of low transmissibility which doesn't need social segregation or public notice. The announcement of a HD case in an immigrant by a governmental medical employee allowed to evaluate its impact within social networks (SN) in Chile, a country without endemic cases.

Aim: To measure the impact and tone of mentions within SN after the announcement of an imported case.