To determine how long to avoid certain foods for tetanus, it is necessary first to assess the onset and severity of the disease. During the onset of the disease, it is generally essential to avoid certain foods, and this dietary restriction usually lasts throughout the treatment process. If it concerns the administration of a tetanus vaccine, then dietary restrictions typically last about a week. Since the tetanus vaccine includes tetanus antitoxin, and its effective duration is about one week, it can effectively prevent tetanus bacterium infection during this time. Therefore, during this period, one must avoid certain foods, usually avoiding spicy and greasy foods. It is advisable to primarily consume a light diet, drink plenty of water, and eat plenty of vegetables and fruits to better aid in preventing tetanus bacterium.