Disease outbreak has occurred in northern Argentina , Brazil and Paraguay . The outbreak has killed at least 21 people . Public health officials recommend that anyone planning to travel to an affected area get the vaccine -- which is effective for a decade -- 10 days before arriving . Health officials recommend that people planning to go to affected areas get vaccine . Title: Why do we have a " right of free speech "?
Disease outbreak has occurred in northern Argentina , Brazil and Paraguay . The outbreak has killed at least 21 people . Health officials recommend that people planning to go to affected areas get vaccine . Title: Why do we have a " right of free speech "?