Researchers tested a new antifungal drug called olorofim against 253 different Fusarium fungi that infect humans. Fusarium is particularly dangerous for people with weakened immune systems and resists most common antifungals. The study found that olorofim works, but its effectiveness varies significantly depending on which type of Fusarium is present. While these lab results are promising, additional testing in animal models is needed before it can be used clinically.