Article on the recombinant BCG, immunity bio will supply

https://www.fiercepharma.com/manufacturing/amid-merck-supply-squeeze-immunitybio-and-serum-institute-snag-fda-blessing-bcg

"Specifically, the partners will now be supplying the U.S. with recombinant BCG, which carries two gene modifications designed to improve immunogenicity and safety versus earlier strains and formulations, ImmunityBio explained."

I didn't know the BCG they were creating was also improved.