America saved doses by increasing the duration of use of corona vaccines again

Washington. US regulators have saved a large number of doses from spoilage by extending the use period of Kovid-19 vaccines for the second time. The US Department of Food and Drug (FDA) on Wednesday sent a letter to vaccine maker Johnson & Johnson declaring that the vaccines are safe and effective for use for at …

America saved doses by increasing the duration of use of corona vaccines again Read More »