Hypothyroidism is hypothyroidism. If you find that you are hypothyroid after taking the cervical 9-valent vaccine, you should pay attention to observe whether you have any adverse reactions. Hypothyroidism belongs to a group of diseases in which the synthesis and secretion of thyroid hormones are reduced, resulting in a low metabolic syndrome. After the vaccine has been injected, you can only observe it for the time being. Do not be overly alarmed, can go to the hospital in time to check whether the thyroid function is normal, if the values are within the normal range, it is usually not good to have an effect. In addition, observe whether there is any adverse reaction, after the injection of vaccine, usually half an hour before leaving the hospital, so as to avoid the occurrence of allergic reactions. If the injection site is localized redness, swelling, ulceration and other phenomena, go to the hospital in a timely manner. For specific cases, follow the doctor’s instructions.