The most important thing for parents to know is that the order does not change which vaccines are available to children and is not based on any new data about vaccine safety.
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A health worker walks through snow during a polio vaccination drive in Pakistan-administered Kashmir's Neelum Valley
Health workers are battling freezing weather to deliver the polio vaccine in Pakistan-administered Kashmir
Harsh terrain and cold weather make the polio vaccination campaign a challenge
Polio workers risk attacks by militants in their efforts to eradicate the virus
Health workers are braving freezing temperatures this week to administer polio vaccinations in Pakistan-administered Kashmir after cases surge…