CHICKENPOX

Understanding chickenpox

chickenpox is a highly contagious disease caused by a viruscalled varicella-zoster.

Varivax III is currently available from Merck Frosst to help protect children, age 12 months andolder, against chickenpox

In clinical trials, antibodies against the varicella virus were observed at 4 to 6 weeks following vaccination with VARIVAX ®III in 97% of children 12 months to 12 years of age.

Necrotizing fasciitis is an extremely severe form of cellulitis that destroys infected tissue under the skin.

A particularly nasty strain of Streptococcus causes this infection. It's contracted in the same way as any other cellulitis, but it proceeds to destroy tissue at a rapid pace (some call it "flesh-eating disease"). The skin takes on a violet color, and large fluid-filled blisters (bullae) and gangrene may develop. The person usually feels very ill and has a fever, a rapid heart rate, and mental deterioration ranging from confusion to unconsciousness. Blood pressure may fall because large amounts of fluid are excreted into the infected area.


VARIVAX ®has been available in Canada since 1998.
It has been studied in over 89,000 children and adults and is generally well tolerated.
Up to now, over 30 million doses have been distributed worldwide.

What the experts recommend

Canadian experts such as...
The Canadian Paediatric Society The College of Family Physicians Health Canada


Giving chickenpox a second thought



As a parent, you take every precaution to protect your child from injury. You purchase the appropriate car seat, you put up stair gates, and make sure your child wears a bicycle helmet.

There are many situations that may put your child at risk of being hospitalized such as:

  • A fall down the stairs: approximately 1 in 6100

  • A bicycle accident: approximately 1 in 5000

  • A motor vehicle accident: approximately 1 in 8500



  • Complications associated with chickenpox:

  • approximately 1 in 2000




Understanding chickenpox

chickenpox is a highly contagious disease caused by a viruscalled varicella-zoster.

Who usually gets chicken pox?


children who have never had chicken pox
children who haven’t been vaccinated against it

Should I protect my child against chickenpox?

Most people believe that chickenpox is a harmless, even normal, part of growing up. But it can be more serious.

Of the 350,000 new cases of chickenpox that occur every year, approximately 1900 will develop complications that require hospitalization.

VARIVAX ®III is a vaccine containing a live, weakened form of chickenpox virus to help prevent chickenpox (varicella).

Varivax ®(varicella virus vaccine live [Oka/Merck strain]) chickenpox

Howlong has VARIVAX ®been available?

VARIVAX ®has been available in Canada since 1998.
It has been studied in over 89,000 children and adults and isgenerally well tolerated. Up to now, over 30 million doses have been distributed worldwide.
Who can be vaccinated with VARIVAX ® III?

VARIVAX ®III is recommended for persons age done year and older who have not had chickenpox

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Who recommends vaccination against chickenpox?

  • The Canadian Paediatric Society

  • The College of Family Physicians of Canada

  • The National Advisory Committee on Immunization (NACI).



When Do Adults Require Vaccinations?


Vaccinations aren't just for children. Under certain circumstances, adults need them, too.

Can VARIVAX ® III be given once a child has been exposed to chickenpox?