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Varicella virus vaccine effective over long term.(Brief Article)

Vaccine Weekly

| April 17, 2002 | COPYRIGHT 2002 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2002 APR 17 - (NewsRx.com & NewsRx.net) -- by Michael Greer, senior medical writer - The varicella-zoster virus (VZV) vaccine provides long-term protection from severe chickenpox, researchers in the United States report.

"The varicella vaccine was approved in 1995 for use in healthy varicella-susceptible children and adults," according to Dr. Krow Ampofo and colleagues at Columbia University in New York City.

People who participated in varicella vaccine trials as children maintained protection from chickenpox into adulthood, Ampofo and coauthors found.

They examined more than 460 healthy adults who were involved in clinical trials of live, attenuated VZV vaccines as early as 1979. More than 90% of the study participants never developed chickenpox after vaccination, according to the report.

Roughly 80% of immunized patients with household exposure to chickenpox were also protected from infection. Study participants who did contract varicella infections developed only mild forms of the illness, even if they did not carry detectable levels of anti-VZV antibodies, study data showed.

However, low ...

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Source: HighBeam Research, Varicella virus vaccine effective over long term.(Brief Article)

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