Pfizer is conducting studies to find out what might be the best formulation.
Along with the German BioNTechThe pharmaceutical giant developed one of the first vaccine COVID-19. It was first injected in the UK in late 2020, less than a year after the disease was first detected in China.
This messenger RNA vaccine — like Moderna’s — was reduced in efficacy against the omicron variant of the virus and its subvariants, although it still offers highly effective protection against severe symptoms, hospitalizations, and death.
Pfizer is currently testing different vaccines and different doses.
“Once we know what is the best way to go ask for approval” in the United States, Europe and other parts of the world, he said.