University of Massachusetts Amherst Jun 3 2026 Researchers at the University of Massachusetts Amherst have designed non-toxic Salmonella bacteria to deliver viruses that are safe to humans but potent against liver and pancreatic cancer tumors - two cancers with an extremely poor prognosis. The researchers found that animal models treated with this combination of bacteria and viruses saw almost all their tumors eliminated and lived significantly longer. There's so much more research to be done