Incidence of herpes zoster was lower than expected among children who received at least one dose of varicella vaccine, results of a recently published study indicated.
Researchers identified just 122 cases of herpes zoster among 172,163 children who received the vaccine between 2002 and 2008. This is equivalent to an estimated incidence of one case per 3,700 vaccinated children per year.
Slightly higher, but statistically insignificant disease rates were observed among children vaccinated after age 5 years compared with those vaccinated between age12 and 18 months. Disease rates gradually increased each year in the first four years after vaccination among children who were vaccinated between age 12 and 18 months.
“The message to parents and pediatricians is that vaccinating your child against the chicken pox is also a good way to reduce their chances of getting herpes zoster,” Hung Fu Tseng, PhD, MPH, study researcher and epidemiologist at the Kaiser Permanente Department of Research and Evaluation in Pasadena, Calif., said in a press release. “More research is needed to identify the virus strains that cause herpes zoster.”
Delayed vaccination, severe asthma and development disorders are other areas that should also be studied further, according to the researchers.
Source: http://www.pediatricsupersite.com/view.aspx?rid=51312
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