A nurse in a family practice office routinely reviews clients' immunization status at their annual physical examination visits. For which of the following clients should the nurse recommend a human papillomavirus immunization?

A. A preschool-age girl: The HPV vaccine is not recommended for preschool-aged children. It is typically administered starting at 9–12 years old to provide protection before potential exposure to HPV. B. A teenage boy: HPV vaccination is recommended for both males and females starting at ages 11–12, with catch-up vaccination through age 26. Administering the vaccine to a teenage boy aligns with CDC guidelines to prevent HPV-related cancers and genital warts. C. An older adult woman: HPV vaccination is not routinely recommended for older adults beyond the catch-up age (up to 26 years). The vaccine is less effective after potential exposure to HPV and is not indicated for routine administration in this age group. D. A middle adult man: Routine HPV vaccination is not recommended for middle-aged men unless there are specific risk factors. Vaccination at this age provides limited benefit because of likely prior exposure to HPV.