That means it would take 1,351,351.35 years, using data from the (thus far) fastest manned spacecraft. As others have touched on, proposed spacecraft can travel faster. exobio says. I think Project Orion (nuclear powered spaceships) can hit up to 10% of the speed of light so that means 500 years, I think.
Medicine and Healthcare. Adults should be vaccinated with the TDaP vaccine (for tetanus, pertussis and diphtheria) every 10 years, maybe less (it is not going to be harmful to vaccinate more frequently). For diseases like whooping cough (also called pertussis), the danger to adults may be as serious as it is to children.
CDC recommends that preteens get one dose of Tdap between the ages of 11 and 12 years to boost their immunity. CDC also recommends that adults age 19 years and older, receive a single dose of Tdap in place of the next Td (tetanus-diphtheria) booster recommended every 10 years.