FDA Warns About Post-COVID Vax Guillain-Barré Syndrome

The FDA added a warning that Johnson & Johnson’s COVID-19 vaccine may trigger Guillain-Barré syndrome (GBS) in a small number of people. Of the 12.5 million Americans who received this vaccine, about 100 people reported having GBS, which is an acquired demyelinating polyneuropathy that often begins in the lower extremities and ascends over time with loss of reflexes, causing muscle weakness, or in the most severe cases, paralysis.