Decide Whether to Get the Vaccine
You should always discuss the risks and benefits of getting the flu shot with your doctor. Some recent studies looked at the effects of the flu vaccine on people with MG. You may want to ask your doctor about these studies as they may help inform your decision.
For instance, a small 2019 study revealed that patients with mild MG developed anti-flu antibodies after receiving an influenza vaccination, similar to what was seen in healthy subjects. However, this study did not look at the effects of the flu vaccine on patients with severe MG.
A larger study from 2018 revealed that MG patients experiencing signs of the flu tended to have more aggravated MG symptoms compared to those who received the vaccine.9 Of the 25 MG patients who experienced flu-like symptoms, 10 reported worsening myasthenia gravis symptoms. Meanwhile, 2 of the 133 patients who received the flu vaccine experienced worsening myasthenia gravis symptoms.9
While the Centers for Disease Control and Prevention (CDC) recommends that people with autoimmune diseases like MG receive the flu shot, you should discuss your specific conditions with your doctor in order to determine whether getting the flu vaccine is the right choice for your overall health.1,3