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A growing body of research reveals that vaccines may deliver far more than protection against specific infectious diseases; they can also trigger broader immune system responses that benefit general health and survival, especially among children. These “non-specific effects”—sometimes called “bonus shots”—recently made headlines in a detailed feature on Salon.com, which highlighted a wave of new scientific findings and renewed international debate. For Thailand, where high childhood immunisation rates have underpinned rising life expectancies for decades, these revelations add new urgency and context to national vaccine policy.