Timely detection and management of post-vaccination complications is one of the three steps to ensure vaccination safety, along with safe injection and safe storage and transportation of vaccines. Mild fever or pain at the injection site are common temporary reactions after vaccination. In a small number of cases, vaccinated people may experience more severe, life-threatening reactions such as anaphylactic shock due to drugs. In this case, the management of anaphylactic shock after vaccination becomes the top priority.