It is very important to get the shingles vaccine when your immune system is strong. My DH's immune system is no longer strong, his oncologist at Mayo Clinic said that he can not have a shingles vaccine injection. Therefore for the rest of his life he will be taking medication to help prevent shingles. My DH refused to get his shingles vaccine when he was healthy and is sorry every day because of the damage shingles did to his leg and the constant pain, now he tells me I should have listened to you.