Comparison of immunogenicity, safety, and efficacy of EVA71 vaccine in children: a systematic review and meta-analysis.
Muhammad Gilang Dwi Putra, Rodman Tarigan Girsang, Rais Amaral Haq et al.
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In 30 seconds
This systematic review and meta-analysis evaluated the immunogenicity, safety, and efficacy of inactivated EV-A71 vaccines in children, analyzing data from five phase III RCTs involving 36,659 participants. The study found that vaccination significantly increased seropositivity and seroconversion rates, with vaccine efficacy against EV-A71-associated HFMD exceeding 98%.
Key findings
- Vaccination resulted in a pooled RR of 13.04 for seroconversion compared to placebo.
- Vaccine efficacy against EV-A71-associated HFMD was over 98% (pooled RR 0.02).
- Seropositivity increased significantly with RR 5.8 in early follow-up and RR 3.09 in medium-term follow-up.
- Solicited adverse events were mild and comparable between vaccinated and placebo groups.
Why it matters
The findings underscore the effectiveness of EV-A71 vaccines in preventing hand, foot, and mouth disease in children, which can lead to severe complications. Understanding vaccine efficacy and safety is crucial for pediatric vaccination strategies.