Little Short-Term Risk of Repeat Bout of Shingles, Study Finds

TUESDAY, June 5 (HealthDay News) — Older people who’ve had
shingles have a relatively low short-term risk of developing the painful
skin condition again, a new study says.

The findings indicate that there is no urgent need for these patients
to get vaccinated in order to prevent a second shingles episode, according
to the researchers at Kaiser Permanente Southern California.

They reviewed the health records and monitored recurrence of shingles
among more than 6,000 patients, 60 and older. During an average two years
of follow-up, there were fewer than 30 cases of recurrent shingles and
little difference in the rate of recurrence among vaccinated and
unvaccinated patients, 19 vs. 24 per 10,000 people.

The study was published online June 5 in the Journal of Infectious
Diseases
.

“This study’s findings are important because we found that the risk of
having a recurrent shingles episode is not as high as previous research
indicates,” study leader Hung-Fu Tseng said in a Kaiser Permanente news
release. “We now have empirical data that show the risk of recurrence is
low among an elderly population who did not have compromised immune
systems, regardless of their vaccination status.”

Shingles, also called herpes zoster, affects more than 1 million people
a year in the United States, according to the release. Shingles occurs
when the dormant chickenpox virus reactivates and replicates, damaging the
nerve system. Patients experience a painful rash or blisters.

Older people have a higher risk of developing shingles because immunity
against the virus that causes the disease declines with age. The U.S.
Centers for Disease Control and Prevention recommends the shingles vaccine
for people 60 and older, including those who have had a previous episode,
the news release notes. But the U.S. Food and Drug Administration says
having an episode of shingles boosts immunity, and it’s unlikely people
would have a recurrence. The FDA also notes that no clinical trials have
been conducted to determine whether the vaccine can prevent repeat
episodes of shingles, according to the release.

“While this latest study adds to the growing evidence base of emerging
knowledge about the shingles vaccine, more research is needed,” said
Tseng, who is with Kaiser’s department of research and evaluation. “Our
findings need to be replicated by studies with larger populations,” Tseng
added.

More information

The U.S. National Institute of Neurological Disorders and Stroke has
more about shingles.

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