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2001 APR 25 - (NewsRx.com & NewsRx.net) --
by Sonia Nichols, staff medical writer - Public health officials in Wisconsin report infant vaccination rates for hepatitis B fell after a major policy statement on vaccine preservatives was announced in 1999.
During the summer of 1999, the American Academy of Pediatrics and the U.S. Public Health Service issued a joint policy statement about the use of thimerosal, a preservative that contains a form of mercury, in vaccines intended for use in children. But in September 1999, the U.S. Centers for Disease Control and Prevention (CDC) recommended that hospitals resume HBV vaccination at birth with a new thimerosal-free vaccine. This required hospitals that wanted to be compliant to change policies rapidly.
Investigators in Wisconsin, representing several public and private research organizations, have since concluded that the statement caused some hospitals to stop offering hepatitis B vaccines to newborn infants.
Preliminary and follow-up surveys were mailed to nurse managers of newborn nurseries at hospitals in Wisconsin that provided obstetrical services. In addition to information about infant vaccine practices following the policy statement, the survey gathered data about hospital policies for vaccinating infants of mothers with positive or unknown HBV serum status. Surveys were returned at rates of 84% and 14%, respectively, for the initial and follow-up mailings.
"Before July 1999, 81% of the hospitals representing 84% of reported Wisconsin births routinely offered hepatitis B vaccine to all infants. By March 2000, 50% of hospitals, representing 43% of births, had resumed routine infant hepatitis B vaccination," reported Marjorie B. Hurie, of the Bureau of Communicable Diseases at the Wisconsin Division of Public Health in Madison, Wisconsin, and colleagues in the April 2001 issue of the journal Pediatrics.
The most common reason given by doctors for not re-implementing infant hepatitis B vaccines was increased use of the combination Haemophilus influenzae B - hepatitis B vaccine.