Federal health regulators once 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. When first authorized in February, the FDA said the vaccines could be stored for three months at normal refrigeration levels. Vaccine expiration dates are based on information from drugmakers on how long the shots stay at the right strength. The FDA has been reviewing expiration dates on all three U.S.-authorized vaccines as companies have continued to test batches in the months since the shots first rolled out. But Pfizer and Moderna, which started shipping shots months earlier, have already supplied more than enough doses to vaccinate all eligible Americans.

Source: Los Angeles Times July 29, 2021 17:25 UTC