COVID-19 vaccines are unique because of the way they inform the body about the virus.

However, AstraZeneca and Novavax are working toward becoming top vaccine producers and distributors, too.

COVID-19 vaccines can come with a number of side effects, but they’re nothing too horrible.

Two vials of Johnson & Johnson vaccine

This syndrome, Guillain-Barre syndrome, has been identified in an estimated 100 people who received the one-dose vaccine.

Its symptoms can last anywhere from a few weeks to a few years.

“Most people recover fully, but some have permanent nerve damage.

Vaccine syringe in front of Johnson & Johnson sign

Some people have died of GBS,” the CDC warns.

This syndrome can also lead to paralysis, as your muscles continue to be attacked by your immune system.