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.
1 It's recommended that adults get a tetanus and diphtheria booster (called Td) every 10 years and substitute a dose of Tdap vaccine for one of these boosters111. 2  Adults who have close contact with an infant younger than 12 months of age should get a Tdap booster if they haven't already had one87.