Updated

As the worst US measles outbreak in decades continues to grow and flu season approaches, experts have expressed alarm after the CDC publicly questioned the validity of two measles deaths in Pennsylvania. Critics say the episode has intensified doubts about the reliability of federal health data amid the ongoing outbreak. The controversy adds to broader unease among public health officials about the CDC's handling of disease surveillance and messaging at a time when measles cases are surging nationally and additional respiratory illness season pressures loom.