
What are the risks of getting a vaccine with a mild cold?
Recently, my roommate caught a cold, and he wants to get vaccinated. Therefore, I would like to know what the risks are of getting a vaccine with a mild cold.

The risks of receiving a vaccine with a mild cold include impaired antibody formation, exacerbated adverse reactions, local reactions, mild fever, allergic reactions, and others. If experiencing discomfort, timely medical consultation is recommended. Detailed explanations are as follows:
1. Impaired antibody formation: During a mild cold, the body may be in an infectious phase. At this time, the immune system may be responding to the cold virus and unable to adequately react to the vaccine stimulation, resulting in insufficient antibody production.
2. Exacerbated adverse reactions: Receiving a vaccine during a mild cold may lead to adverse reactions such as mild fever, headache, and fatigue, which could worsen the symptoms of the cold.
3. Local reactions: These include redness, pain, or hard lumps at the injection site, which generally last for several days to about a week.
4. Allergic reactions: Individuals may experience allergic reactions to the vaccine, such as skin itching and swelling. These reactions may be more pronounced during a cold.
5. Worsening of illness: Getting vaccinated during a mild cold may trigger an immune response that could interact with the cold virus, potentially worsening the illness. It is recommended to wait until full recovery from a cold before vaccination to ensure both vaccine effectiveness and safety.