You may be given the Tdap vaccine if you have a severe cut or burn and have never received a dose before. Severe cuts or burns raise your risk of getting tetanus.
The Tdap vaccine can be given any time of the year. Only one shot is needed. It may be given with other vaccinations. Tdap can be given regardless of the interval since the last Td vaccine was given.
The Tdap vaccine can be used safely for those ages 65 and over, according to 2013 CDC recommendations.