NAVLE（北美执业兽医考题）Day 553

单选题，正确答案是100分，非正确答案为0分，Good Luck！

The dog in the photograph was vaccinated earlier in the day. What type of allergic reaction is occurring?

图片中的这只狗今天早些时候打了疫苗。这属于哪一类型的超敏反应？