Age can affect your immune system. So can an HIV infection, cancer, cancer treatments, too much sun, or organ transplant drugs. Even stress or a cold can weaken your immune system for a short time. These all can put you at risk for shingles.
https://www.nia.nih.gov/health/publication/shingles
Shingles is a disease that affects your nerves. It can cause burning, shooting pain, tingling, and/or itching, as well as a rash and blisters. You may recall having chickenpox as a child. Shingles is caused by the same virus, the varicella-zoster virus (VZV). After you recover from chickenpox, the virus continues to live in some of your nerve cells.
https://www.nia.nih.gov/health/publication/shingles
Most cases of shingles last 3 to 5 weeks. Shingles follows a pattern: 1  The first sign is often burning or tingling pain; sometimes, it includes numbness or itching on one side of the body.  Somewhere between 1 and 5 days after the tingling or burning feeling on the skin, a red rash will appear.
https://www.nia.nih.gov/health/publication/shingles
Fortunately, a vaccine is available that greatly reduces the risk of shingles. Schaffner, who is also a professor in Vanderbilt University School of Medicine's infectious diseases division and chair of the school’s department of preventive medicine, spoke with WebMD about getting protected.
http://www.webmd.com/vaccines/features/shingles-vaccine-for-adults
Not at the moment. The shingles vaccine is available on the NHS only for people aged 70 and 78 on 1 September 2015 (and to people aged 71, 72 or 79 who haven't been vaccinated yet). The shingles vaccination programme is being staggered this way as it would be impractical to vaccinate everyone in their 70s in a single year.
http://www.nhs.uk/Conditions/vaccinations/Pages/shingles-vaccine-questions-and-answers.aspx
The vaccine against shingles is cleared for use among those age 50 and older, but the CDC's Advisory Committee on Immunization Practices (ACIP) does not recommend the vaccine before age 60.
http://www.reuters.com/article/us-health-shingles-vaccine-cost-idUSKCN0R729X20150907
Overall, they calculated, for every 1,000 people receiving the vaccine at age 50, just 25 shingles cases and one case of shingle-related pain would be prevented.
http://www.reuters.com/article/us-health-shingles-vaccine-cost-idUSKCN0R729X20150907
People under the age of 70 will get the shingles vaccine during the year following their 70th birthday. It's not available on the NHS to younger people, because shingles is more common in the over-70s. Not at the moment.
http://www.nhs.uk/Conditions/vaccinations/Pages/shingles-vaccine-questions-and-answers.aspx
By Andrew M. Seaman. (Reuters Health) - The shingles vaccine might not be cost-effective for people in their fifties, a new analysis suggests. The Centers for Disease Control and Prevention (CDC) does not recommend the shingles vaccine for that age group, and the authors of the new analysis say their findings support that policy.
http://www.reuters.com/article/us-health-shingles-vaccine-cost-idUSKCN0R729X20150907
The risk of getting shingles increases as you age. People may have a harder time fighting off infections as they get older. About half of all shingles cases are in adults age 60 or older. The chance of getting shingles becomes much greater by age 70.
https://www.nia.nih.gov/health/publication/shingles
age for shingle shot
The age for the shingles shot is 60 years.  The age for shingle shot is 60 years.