Is shingles contagious?
Dr.
Chen, can shingles be contagious? My mother recently developed shingles, is there a possibility that she could transmit it to my baby (who is just two months old), causing the baby to develop chickenpox? If it is contagious, what is the potential period of transmission, and how long is the incubation period from infection to onset of symptoms for the baby? Thank you.
Tian Xiao Tian, 20~29 year old female. Ask Date: 2004/02/25
Dr. Chen Yiying reply Dermatology
Hello: In response to your question, the virus in the shingles blisters can potentially be transmitted to a baby who has never had chickenpox, causing the baby to develop chickenpox.
However, since your baby is only two months old, if you have had chickenpox, the baby will have protective antibodies from the mother.
The contagiousness of shingles is approximately one-third that of chickenpox, and it is no longer contagious once the blisters have crusted over.
The incubation period from infection to rash for chickenpox is about two weeks.
Reply Date: 2004/02/25
More Info
Shingles, also known as herpes zoster, is a viral infection caused by the reactivation of the varicella-zoster virus (VZV), which is the same virus that causes chickenpox. When someone has shingles, they can indeed transmit the virus to individuals who have never had chickenpox or have not been vaccinated against it. This transmission occurs through direct contact with the fluid from the shingles blisters. If an infant who has never had chickenpox comes into contact with this fluid, they can develop chickenpox, not shingles.
In your case, since your mother has shingles, there is a potential risk for your two-month-old baby if they come into direct contact with the shingles rash or blisters. However, it is important to note that shingles is not spread through respiratory droplets like chickenpox; it requires direct contact with the rash. Therefore, if your mother avoids direct contact with the baby and covers her rash, the risk of transmission is significantly reduced.
The contagious period for shingles typically begins when the rash appears and lasts until the blisters have crusted over. This usually takes about 7 to 10 days. During this time, it is crucial to minimize contact between your mother and the baby. If your mother is careful to keep the rash covered and practices good hygiene, such as frequent handwashing, the risk of transmission can be further mitigated.
If your baby were to contract the virus, the incubation period for chickenpox is generally about 10 to 21 days after exposure. This means that if your baby were to be exposed to the shingles rash, you might not see any symptoms until this period has passed. Symptoms of chickenpox include fever, fatigue, and the characteristic itchy rash that develops into fluid-filled blisters.
Given your concerns, it is advisable to monitor your baby for any signs of chickenpox, especially if there has been any direct contact with your mother’s shingles rash. If you notice any symptoms or if you have further concerns about your baby's health, it would be prudent to consult your pediatrician for guidance and potential evaluation.
In summary, while shingles can be contagious, the risk of transmission to your infant can be minimized with appropriate precautions. It is essential to maintain good hygiene practices and limit direct contact during the contagious period. If you have any further questions or concerns, do not hesitate to reach out to your healthcare provider for personalized advice.
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