摘要：
In the past, immunization programs worldwide mainly focused on the
delivery of infant and early childhood vaccines. An increasing awareness
of the importance of investing in adolescents’ health has
led to the introduction of new vaccines targeted specifically to
adolescents over the last ten years: this has improved the adolescent’s
opportunities to protect from certain diseases for which they are
at an increased risk. Safe and effective vaccines against human
papilloma virus, Neisseria meningitides and Bordetella
pertussis are recommended in many parts of the world; nevertheless,
vaccination coverage in this age group is relatively low compared
to coverage in infants. Barriers to adolescent immunization are
believed to be complex and multifactorial but overcoming these barriers
will be of primary importance for the future.
