J&J's COVID-19 vaccine may cause rare immune system disorder, warns the US FDA

Johnson & Johnson’s (J&J) COVID-19 vaccines may increase the risk of Guillain-Barre syndrome, warns US FDA*. Guillain-Barré syndrome is a rare and dangerous neurological condition. The autoimmune disease can cause muscle weakness and paralysis. About 13 mln people or about 8% of the fully vaccinated population in the US got the J&J vaccine. Out of which, 100 suspected cases of Guillain-Barré were identified by the FDA officials. Almost all of them required hospitalisation and one person died. The cases were reported two weeks after vaccination and mostly in males aged 50 and above. About one person in 100,000 each year develops the condition and most of them eventually recover. Other COVID-19 vaccines in the US, the Moderna and Pfizer have not shown this side effect. Earlier, the single-shot vaccine was issued a warning due to the increased risk of blood clots in those vaccinated.