Is it safe to receive a vaccine with a blood oxygen saturation level of 70%?
Generally, individuals with a blood oxygen saturation level of 70% should not receive vaccination. The detailed explanation is as follows:

A blood oxygen saturation level of 70% is far below the normal range, indicating a severe oxygen deficiency in the body. Under such hypoxic conditions, the functions of various organs may be impaired and immune function can also decline. Administering a vaccine at this time not only fails to effectively stimulate an adequate immune response but may also increase the risk of adverse reactions. After vaccination, some people may experience mild side effects such as fever or fatigue. Individuals with low oxygen levels already have poor physical tolerance, and these reactions could further burden the body, potentially exacerbating pre-existing medical conditions and posing additional health risks. Therefore, it is essential to first identify and address the underlying cause of hypoxia, improve the patient's condition, and wait until oxygen levels return to normal before considering vaccination.
In daily life, closely monitor blood oxygen levels, ensure good ventilation in your environment, and avoid enclosed spaces. Get appropriate rest based on your physical condition and minimize physical exertion. Maintain a diet rich in protein and vitamins to strengthen overall health. If symptoms such as worsening shortness of breath or chest tightness occur, seek medical attention promptly—do not delay—to ensure timely intervention for oxygen deficiency.