At what age should I get a shingles vaccine?
The US CDC recommends adults at the age of 50 or older receive a singles vaccine, but adults at the age of 19 or older are also recommended to get one if they have a weakened immune system.
Instruction: At what age should I get a shingles vaccine?
Context: 
Response: The US CDC recommends adults at the age of 50 or older receive a singles vaccine, but adults at the age of 19 or older are also recommended to get one if they have a weakened immune system.