The ban targets common ingredients in candies and processed foods, including red dye No. 3, titanium dioxide, brominated vegetable oil, potassium bromate, and Propylparaben.
Both COVID vaccines and the virus itself are "plausible triggers" of the disease, but the study authors specify that vaccines were "more frequently" linked to the ulcers than the virus.
Under-reporting of injuries following vaccination "should be considered when delivering information to the community and in public health decision-making," the study authors write.
The FDA has "repeatedly stated that effectiveness against transmission remains unproven," the trio write, noting that the agency’s website maintains: "the scientific community does not yet know if Comirnaty will reduce such transmission."