That might force regulators to choose updated vaccines based on data from laboratory tests and trials involving mice or other animals, rather than robust human trials. It is also possible that another new variant or subvariant of concern will appear by the fall, further complicating the picture. Outside advisers to the Food and Drug Administration are scheduled to meet June 28 to discuss which vaccine formulation would work best as a fall booster; vaccine manufacturers have said they would need to start production soon. will likely do is keep as many irons on the fire as they possibly can. Federal health officials said that the composition of the annual flu vaccine is changed to meet new variants with minimal new human tests.

Source: New York Times June 09, 2022 09:13 UTC