1. Have 乙 型 肝 炎 疫 苗 第 二 針注射 when baby is 1 month old, your baby does not need to be exactly one month old, just depend on you whether you want to bring him to have the injection before or after full moon.
2. You can go to private clinic and have 六合一 when baby is between 1.5 months and 2 months. 六合一 includes 乙 型 肝 炎 疫 苗 第 二 針 + 五合一.