Safety comparison between PVRV and PCECV with Zagreb or Essen regimen on different age group.

aLocal adverse events (AEs) included pain, induration, edema, tendemess, and erythema in this study, but only top 4 AEs were listed.bSystemic AEs included fever, malaise, allergy, restlessness, nausea and vomiting in this study, but only top 3 AEs were listed.cBy χ2 test for comparison of total patients with AEs between PVRV and PCECV.dBy χ2 test for comparison of patients number in different age groups between PVRV and PCECV.Safety comparison between PVRV and PCECV with Zagreb or Essen regimen on different age group.