Shingles: The Disease & Vaccines
“One morning as I got ready for work, I noticed a slight itchiness on my back, and when I twisted myself in the mirror to try to see what was going on back there, I saw a few red blotches on the top right side of my back.”
“My experience with shingles began with a small, red, painful spot on the top of my head, as if I had bumped it on something.”
“The first time I had shingles, I noticed my left leg was extremely itchy just hours before leaving for work. I didn’t think much of it – I just thought I had an itch, so I kept scratching.”
“I first felt a blister on the right side of my head when I took my motorcycle helmet off. I wanted to scratch it, but knew better because blisters aren’t something you mess with.”
“On a weekend evening … my husband … started to complain that he felt there was something sharp in his left eye. When I looked, I could not see anything.”
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Each of these stories, from our Parents PACK website’s personal stories section, start out similarly. The person had some mild symptom and didn’t think much about it. But if you continue reading, each person goes on to describe a much more debilitating experience.
In fact, the pain from shingles has been described as one of the worst in medicine.
A shingles vaccine is available for adults 50 years of age and older in the U.S. The vaccine prevents much of the pain and suffering caused by shingles when the virus that causes chickenpox reawakens in those with aging or compromised immune systems.
The disease
What is shingles?
Shingles is a disease caused by the reawakening (or reactivation) of chickenpox virus. Shingles most often occurs in elderly people and people with weakened immune systems. Common symptoms of shingles include:
- A rash, usually along a nerve path
- Severe pain that can last for months and be so debilitating that typical daily routines are disrupted
How common is shingles?
Every year in the U.S., shingles affects between 500,000 and 1 million people. Individuals have a 20%-30% chance of getting shingles during their lifetime. About half of the people who live to 85 years old will get shingles.
Is shingles dangerous?
Although people do not die from shingles, it can severely hurt them or cause changes to their daily living. Perhaps the most common and debilitating complication is persistent, long-lived pain. The pain can be so severe that it leads to:
- Sleeplessness
- Feelings of helplessness and depression
- Weight loss
- Anorexia
- Interference with basic daily activities, such as dressing, bathing and eating
- Inability to participate in normal social activities
The pain can last for months or even years. Alongside the pain caused by labor and that of corneal abrasions, the pain caused by shingles is among the most debilitating pains in medicine. Shingles-induced pain can be so relentlessly debilitating that it can be a cause for suicide.
About 15 of every 100 people with shingles have blisters that are associated with nerves around the eyes. This can result in reduced vision and blindness.
Scarring and concurrent bacterial infections can also occur at the site of the rash.
Is shingles contagious?
No. You cannot get shingles from someone who has shingles. However, because shingles is caused by the same virus that causes chickenpox, someone who has not had chickenpox or a chickenpox vaccine can get chickenpox if exposed to the shingles rash.
How can you avoid shingles?
Once you have had chickenpox, you can get shingles. People who are 50 years of age or older can decrease their chance of getting shingles by getting the shingles vaccine.
The vaccine
How is the shingles vaccine made?
The shingles vaccine available in the U.S., Shingrix, contains a single protein from the surface of herpes zoster virus as well as two adjuvants: QS21 and monophosphoryl lipid A. QS21 is a soap-based molecule isolated from the bark of the Quillaja saponaria tree. Monophosphoryl lipid A is a detoxified form of lipopolysaccharide, a potent adjuvant taken from the surface of common bacteria.
The first shingles vaccine, called Zostavax, is no longer available in the U.S. However, this version contained a more concentrated version of the same live, weakened virus as the current chickenpox vaccine. It contained about 14 times the amount of weakened chickenpox virus than the vaccine for children. This amount of virus was necessary to obtain a protective response in the aging immune systems of older adults.
The introduction of Shingrix vaccine was important because adjuvants in the vaccine improved immune responses in older adults and decreased the need to use large quantities of the live, weakened virus also necessary to make chickenpox vaccine. For these two reasons Zostavax is no longer available in the U.S.
Does the shingles vaccine work?
Yes. the shingles vaccine protects almost 100% of people from infection and about 90 of every 100 people from the long-term pain associated with shingles.
Is the shingles vaccine safe?
Yes, the shingles vaccine can cause common side effects including redness, pain and swelling at the injection site. Some people may also experience:
- Fatigue
- Fever
- Headache
- Body aches
- Shivering
Who should get the shingles vaccine?
People who are 50 years of age and older should receive two doses of the shingles vaccine, even if they previously received the older version (called Zostavax). The doses should be separated by 2 to 6 months.
Other questions you might have
Can my grandfather with shingles give my baby daughter chickenpox?
Yes, although people with shingles cannot pass shingles to someone else, they can pass chickenpox virus to others through direct contact with the rash. If a baby has not yet had chickenpox or the chickenpox vaccine, they could become infected with the virus and develop chickenpox.
Unlike chickenpox that can be passed to others through coughs or sneezes, people with shingles can only pass the virus to others through direct contact with the rash. If the rash has yet to develop or if it has already crusted, the patient cannot transmit the virus. Similarly, people who still have pain without the rash are no longer able to transmit the virus.
Do I need to get the shingles vaccine if I already had shingles?
Although you are less likely to get shingles if you have had it previously, the shingles vaccine can still be of benefit. Up to 5 of every 100 people will get shingles more than once.
Do I need to get Shingrix vaccine if I had the Zostavax version previously?
Yes, because Shingrix protects more people, it is recommended even for those who previously received Zostavax.
Can I still get the shingles vaccine if I don’t remember having chickenpox?
Yes, existing data suggests that almost everyone older than 40 years of age has been exposed to chickenpox, so even if you do not remember having chickenpox, you should get the shingles vaccine.
Where can I get a shingles vaccine?
If your primary care physician does not offer the shingles vaccine, you can check with your local health department and pharmacies in your area.
Can people who got the shingles vaccine be around babies?
Yes, people who had the shingles vaccine can be around babies. Unlike the previously available Zostavax vaccine, Shingrix does not contain live, weakened virus, so it does not replicate and people do not get a rash. Therefore, there is no chance of transmitting the virus to babies who are susceptible to chickenpox. Watch as Dr. Offit discusses being around babies after receiving a shingles vaccine in this short video, part of the series Talking About Vaccines with Dr. Paul Offit.
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Do I Need to Avoid Being Around Infants After Getting a Shingles Vaccine? Paul Offit, MD: Hi, my name is Paul Offit. I’m talking to you today from the Vaccine Education Center, here at the Children’s Hospital of Philadelphia.
One question people and often grandparents have is, “Can I be around people if I’ve gotten the shingles vaccine?” So, what is shingles? Shingles is a reactivation, or reawakening, of a previous chickenpox infection. So, if you had chickenpox as a child, that virus lives silently, or latently, in the nervous system. And sometimes when you get older or when you have a particularly severe infection or you’re on chemotherapy, for example, that virus can reawaken and then travel down a so-called nerve route and cause a pretty severe, debilitating, painful reaction called shingles. It’s one of the worst pains in medicine, so it’s certainly worth preventing.
There were two shingles vaccines. One of them was called Zostavax®. That actually was the chickenpox vaccine; it just was 14 times the dose. That was a live weakened form of the virus; that is no longer commercially available. The other vaccine is called Shingrix®. It’s recommended for everyone over 50 years of age. That vaccine is not a live attenuated viral vaccine. It really is made just using one particular protein from the virus called the glycoprotein E, and then it has two adjuvants associated with that. It’s an excellent vaccine; it works very well in people over 50 years of age, and certainly worth getting. But in terms of whether or not you’re “contagious,” if you will, after you’ve gotten that vaccine — you’re not, because it only contains one protein. So, certainly if grandparents are worried if they’ve gotten the shingles vaccine whether they can be around their grandchildren, that’s not a problem.
Thank you.
Can people who got the chickenpox vaccine get shingles?
While people who got the chickenpox vaccine can get shingles caused by the vaccine virus, the frequency and severity of shingles is much less than that following natural infection.
Can the shingles vaccine decrease the chance for dementia?
A growing body of evidence suggests that the shingles vaccine can decrease the diagnosis and progression of different forms of dementia. However, additional studies will be needed to better understand these findings. A few different possible explanations exist, but we don’t yet know what is causing these changes. Some hypotheses include that the vaccination:
- Decreases the occurrence of shingles, which has itself been associated with causing dementia
- Protects against generalized inflammation of neurologic tissues
- Counteracts immunosenescence, which is the decreased effectiveness of the immune system due to aging
Three other points are worth mention. First, the effects were more pronounced in women than men. Second, in at least one study, the effects were apparent for both Shingrix and Zostavax, but more pronounced following receipt of Shingrix. Third, some findings suggest a delay in onset, rather than complete prevention, of dementia.
While the current understanding suggests that receipt of shingles vaccine may offer benefits beyond preventing a case of shingles, prevention of dementia should not be the basis for a decision to get this vaccine until we understand more.
Relative risks and benefits
Disease risks
- Debilitating and long-lasting pain
- Scarring or infection at the site of the rash
- Reduced vision or blindness if blisters occur in nerves around the eye (15 of 100 people)
Vaccine risks
- Pain, redness, swelling or itching at the injection site
- Fatigue, fever, headache, body aches or shivering
Reference
Orenstein WA, Offit PA, Edwards KM and Plotkin SA. Diphtheria Toxoid in Plotkin's Vaccines, 8th Edition. 2024, 1334-1349.
Reviewed by Paul A. Offit, MD, on Jan. 14, 2026