https://www.npr.org/sections/coronavirus-live-updates/2021/07/28/ [login to see] /fda-extends-expiration-date-johnson-johnson-covid-vaccine-6-months
Federal health regulators on Wednesday again extended the expiration dates on Johnson & Johnson's COVID-19 vaccine, providing health workers with six more weeks to use millions of doses of the shot.
The Food and Drug Administration said in a letter to J&J that the shots remain safe and effective for at least six months when properly stored and refrigerated. It's the second time the FDA has extended the shelf life on the vaccines since June, when the agency said they could be used for up to 4 1/2 months. When first authorized in February, the FDA said the vaccines could be stored for three months at normal refrigeration levels.