Why the study?
Rotavirus is a leading cause of severe acute gastroenteritis in children preventable by immunization, but global coverage, completion, compliance, and influencing factors across settings needed assessment.
Does the 2-dose rotavirus vaccine have better coverage, completion, and compliance compared to the 3-dose rotavirus vaccine in children?
Does the 2-dose rotavirus vaccine have better coverage, completion, and compliance compared to the 3-dose rotavirus vaccine in children?
The 2-dose rotavirus vaccine may offer better completion and compliance rates than the 3-dose vaccine in certain countries, though global comparisons are limited by data availability.
May support 2D-RV preference for compliance in Italy, Mexico, and US; leaves open global coverage effects.
Rotavirus, a leading cause of severe acute gastroenteritis in children, is largely preventable through immunization with two internationally licensed oral rotavirus vaccines (RVVs) included in national programs across over 100 countries. These RVVs are administered in either two (Rotarix™; 2D-RV) or three (RotaTeq®; 3D-RV) doses. We aimed to assess the global coverage, completion, and compliance of 2D-RV and 3D-RV in various settings, and to identify factors influencing vaccine coverage. We conducted a systematic review of PubMed and Embase for articles published between 2006 and 2021. We included 74 publications across 31 countries. RVV coverage rates and the factors associated with coverage varied widely among countries based on income level, RVV used, and the year of vaccination. Due to market bias and insufficient studies, valid RVVs coverage comparisons couldn't be made. However, 2D-RV had better completion/compliance rates than 3D-RV in Italy, Mexico, and the US.
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Tahrat et al. (2025) studied this question.
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