It is not recommended to eat seafood for the New Crown vaccine mainly because seafood itself may induce allergic reactions, and the New Crown vaccine may also cause allergic reactions, and the two may induce, cover up and aggravate each other, which is not conducive to determining whether there is an adverse reaction after the New Crown vaccine, and is not conducive to the recovery of adverse reactions. First of all, seafood itself can easily cause allergic reactions, especially for people with allergies, which can easily trigger or aggravate the adverse reactions to the vaccine and make the condition more complicated. If there is no allergic reaction, only minor vaccine reactions such as nausea and local hard nodules, etc. can usually recover on their own in 2-3 days and no special treatment is needed. However, if an allergic reaction occurs, the original vaccine reaction will be aggravated and the allergic reaction will be aggravated by the adverse reaction caused by the vaccine injection, which affect each other and cause each other, making the recovery time of symptoms longer. If a double allergic reaction occurs, that is, an allergic reaction occurs due to seafood and an allergic reaction occurs at the same time due to vaccination, it may lead to serious allergic reactions, such as anaphylaxis, laryngeal edema, etc., and symptoms such as unconsciousness, coma, difficulty in breathing, and cyanosis of the mouth and lips, etc. These two allergic reactions belong to emergency cases, and the condition progresses rapidly, and rescue needs to be done every second, and if you do not go to the hospital in time or are far from If you do not go to the hospital in time or are far away from the hospital, you may even have a life-threatening condition. After vaccination, besides avoiding seafood, you should also pay attention to a light diet and avoid spicy and stimulating foods.