Serious fungal infections (candidiasis) in newborns have become increasingly difficult to treat, especially in developing countries. The types of fungi causing these infections have changed dramatically, with many now resisting the standard fluconazole treatment. Modern medical care, like proper handwashing, environmental cleaning, and careful line care, is actually more effective at preventing these infections than giving preventive antifungal drugs. Healthcare providers need better tools for quickly identifying which fungal species is causing infection and which drugs will work against it.