Shingles itself is not contagious, but the virus that causes it is
You cannot catch shingles from another person. Shingles is caused by the varicella-zoster virus reactivating inside nerve tissue — it happens only in people who have already had chickenpox. The virus does not spread from one person's shingles rash to another person's nerves.
However, the varicella-zoster virus itself can spread from a person with shingles to someone who has never had chickenpox or the chickenpox vaccine. That person would develop chickenpox, not shingles. The virus travels through direct contact with the fluid in the shingles blisters, not through the air.
If you are around someone with shingles and you have already had chickenpox or been vaccinated, you cannot catch either disease from them. Your immune system already recognizes the virus.
Key Takeaways
- Shingles rash cannot give you shingles, but it can give you chickenpox if you have never had chickenpox or the vaccine.
- The virus spreads only through direct contact with fluid from the blisters, not through coughing, sneezing, or breathing the same air.
- You are most contagious from the moment the blisters appear until they crust over and dry completely, usually one to two weeks.
- Keeping the rash covered and washing your hands after touching it stops the virus from reaching other people.
- People who have had chickenpox or received the chickenpox vaccine cannot catch chickenpox from someone with shingles.
Who can catch the virus from a shingles rash
Only people who have never had chickenpox and have not been vaccinated against it can catch the virus from someone with shingles. Infants too young for the chickenpox vaccine, unvaccinated children, unvaccinated adults, and people with weakened immune systems who did not respond to the vaccine are at risk.
Pregnant people who have never had chickenpox are also vulnerable. Chickenpox during pregnancy carries risks to both the pregnant person and the developing baby, so avoiding exposure is important. If you are pregnant and unsure whether you have had chickenpox, your doctor can test your immunity before you are exposed.
People with shingles should tell household members, coworkers, and anyone they spend time with whether those people have had chickenpox. This is especially urgent if there are infants, unvaccinated people, or pregnant people in the home.
How the virus spreads and how to stop it
The varicella-zoster virus spreads through direct contact with the fluid inside the shingles blisters. Touching the rash and then touching your face, eyes, or another person transfers the virus. The virus does not travel through the air — you cannot catch it by being in the same room, breathing the same air, or touching surfaces the person has touched.
Once the blisters crust over and dry, they no longer contain infectious fluid. At that point, the rash cannot spread the virus, even with direct contact. The time from blister appearance to complete crusting usually takes one to two weeks, though it varies.
To prevent spread, a person with shingles should keep the rash covered with clean, dry bandages or clothing, wash their hands after touching the rash, and avoid touching their face or eyes. They should not share towels, razors, or other items that might contact the rash. These steps are especially important around infants, unvaccinated people, and pregnant people who have not had chickenpox.
What happens if an unvaccinated person is exposed
If someone who has never had chickenpox comes into contact with fluid from a shingles rash, they will develop chickenpox, not shingles. Chickenpox appears as a widespread rash of fluid-filled blisters, usually starting on the face and trunk and spreading across the body. It is accompanied by fever, body aches, and fatigue.
Chickenpox is more severe in adults and in people with weakened immune systems than it is in children. Complications can include bacterial infections of the skin, pneumonia, and encephalitis (brain inflammation). Pregnant people who develop chickenpox face increased risk of severe disease and birth defects.
If you know you were exposed to someone with shingles and you have never had chickenpox, contact your doctor right away. Antiviral medication started within three to five days of exposure may prevent chickenpox or reduce its severity. Do not wait for symptoms to appear.
Vaccination status and your risk
The chickenpox vaccine protects most people from catching chickenpox, even if they are exposed to the virus. Two doses of the vaccine are about 90 percent effective at preventing chickenpox entirely. If a vaccinated person does catch chickenpox, the disease is usually much milder — fewer blisters, lower fever, and faster recovery.
Vaccination also reduces the risk of shingles later in life. The recombinant zoster vaccine (Shingrix) is recommended for adults 50 and older and for certain younger adults with weakened immune systems. It is more effective than older shingles vaccines at preventing shingles and the long-term nerve pain that can follow.
If you are unsure whether you have been vaccinated against chickenpox, your doctor can check your vaccination records or test your immunity with a blood test. This is worth doing before you are exposed, especially if you work with children, pregnant people, or immunocompromised patients.
Shingles and daily life while contagious
A person with shingles can go about their normal routine as long as the rash is covered and they take precautions. They can go to work, school, or public places. They should avoid contact sports, swimming, and other activities where the rash might be exposed or where they might touch other people's faces or eyes.
Healthcare workers and people who work with young children or immunocompromised people should talk to their employer about whether they need to stay home. Some workplaces have policies about contagious conditions, and some patients are at high enough risk that even covered shingles poses a concern.
Childcare settings and schools may have their own rules. A person with shingles can usually attend if the rash is completely covered, but it is worth asking ahead rather than showing up and being turned away.
When the rash is no longer contagious
The shingles rash stops being contagious once all the blisters have crusted over and dried. This usually happens within one to two weeks of the rash appearing, though it can take longer in older adults or people with weakened immune systems. Crusted blisters no longer contain infectious fluid.
Even after the blisters are gone, some people experience lingering pain, numbness, or itching in the area where the rash was. This is called postherpetic neuralgia, and it is not contagious. The virus is no longer active in the skin.
If you are unsure whether your blisters have crusted over enough, ask your doctor. They can tell you when it is safe to be around unvaccinated people and infants again.
Frequently Asked Questions
Can I get shingles twice?
Yes, though it is uncommon. Most people get shingles only once, but the virus can reactivate again later in life. The risk increases with age and if your immune system is weakened. If you have had shingles, the Shingrix vaccine is still recommended to reduce the risk of recurrence.
If I have shingles, should I stay away from my grandchildren?
Only if your grandchildren have never had chickenpox and are not vaccinated. If they have been vaccinated or have had chickenpox, they cannot catch the virus from you. Keep the rash covered when you are around them, and wash your hands before and after contact.
Can shingles spread to other parts of my body?
Shingles typically stays in one area of the body along a single nerve path. It does not spread from one part of your body to another. However, if you touch the rash and then touch another part of your body, you could theoretically transfer the virus, though this is rare.
What if I have shingles and live with an unvaccinated person?
Keep the rash covered at all times, wash your hands frequently, and do not share towels or personal items. If the unvaccinated person is an infant, pregnant, or immunocompromised, contact your doctor about whether additional precautions are needed. Your doctor may recommend the unvaccinated person receive the chickenpox vaccine if they are old enough.
Does the shingles vaccine prevent me from spreading the virus?
The shingles vaccine does not prevent shingles in all cases, but it significantly reduces the risk and severity. If you do develop shingles after vaccination, the rash is usually milder and less likely to cause long-term pain. You can still spread the virus to unvaccinated people, so the same precautions apply.