Improving vaccination uptake among adolescents

Area of Science:

• Public Health
• Vaccinology
• Health Services Research

Background:

• Adolescent vaccination coverage remains suboptimal despite global initiatives.
• Understanding effective interventions is crucial for improving adolescent immunization rates.

Purpose of the Study:

• To evaluate interventions aimed at increasing vaccine uptake among adolescents.

Main Methods:

• Systematic review and meta-analysis of randomized trials, non-randomized trials, controlled before-after studies, and interrupted time series studies.
• Searched multiple databases and clinical trial platforms.
• Assessed risk of bias and certainty of evidence using GRADE.

Main Results:

• Health education significantly improves human papillomavirus (HPV) vaccine uptake (high-certainty evidence).
• Financial incentives show potential for increasing HPV vaccine uptake (low-certainty evidence).
• Mandatory vaccination demonstrates a substantial increase in hepatitis B vaccine uptake (moderate-certainty evidence).
• Provider-oriented interventions and class-based school vaccination strategies show promise, though evidence certainty varies.

Conclusions:

• Various strategies, including health education and incentives, can enhance adolescent vaccination, but evidence is often of low to moderate certainty.
• Further research is essential, particularly in low- and middle-income countries, to refine adolescent immunization strategies.
• Understanding factors influencing vaccine hesitancy and demand is critical for future program development.