@juli_bg_bs Bad conclusion here. It's basically saying that you need to vaccinate 56 people to prevent one serious illness over a year (assuming protection lasts a year, if needed every six months, might be double this). That's not bad at all!
@juli_bg_得出了不好的结论。它基本上是说，你需要为56人接种疫苗，以在一年内预防一种严重疾病（假设保护持续一年，如果每六个月需要，可能是这一数字的两倍）。一点也不坏！