You can still be infected with the flu vaccine. Before the flu vaccine is given to the human body, when the body’s immune function is low or the defense function is weakened, it can be attacked by bacteria, viruses, and pathogenic microorganisms such as mycoplasma, chlamydia, or fungi, which can cause disease in the human body, so the flu vaccine can also be transmitted. After the flu vaccine, you should pay attention to rest, drink more water, eat and live regularly, avoid smoking and alcohol, and avoid excessive exertion and cold. You should eat more high-quality protein, such as fish, shrimp, beef, lean meat, etc. At the same time, you should actively engage in physical exercise to enhance the body’s resistance, only then can you achieve the purpose of disease prevention.