Data from the 2010 North Carolina Child Health Assessment and Monitoring Program showed that only 14% of teen boys had started human papillomavirus vaccination compared with 44% of teen girls. The most frequently cited reason by parents for not vaccinating their sons was lack of information about the vaccine, while parents of girls were mainly concerned about the vaccine's safety and adverse effects, researchers said. The study was presented at an American Society for Preventive Oncology meeting.

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