Critics say a legal maneuver by one of the world's wealthiest corporations could set a precedent, allowing non-bankrupt companies and rich individuals to avoid liability for wrongdoing.

Should people who get a COVID booster get a different vaccine from their original shot? The results of a highly anticipated study suggest that in some cases the answer may be yes.

Johnson & Johnson said that when it gave study participants a second jab after six months, their antibody levels were nine times higher than they were 28 days after a first dose of the COVID vaccine.