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.
DTaP is given to children younger than 7 years of age and Tdap is given to children, adolescents, and adults 7 years of age and older. Students who have already received a dose of Td (tetanus and diphtheria vaccine) at age 7 years or older must still receive a dose of Tdap.