Preventive care is essential for keeping children healthy, and it becomes even more critical during cold and flu season. But a new nationwide survey from Lurie Children’s Hospital in Chicago finds 1 in 3 parents don’t plan on getting their child vaccinated against the flu this winter, most commonly because they believe their child simply doesn’t need it. The report also shows that 42% of parents admit sending children to school or daycare with mild cold symptoms, and 41% say they’ve done so even when they likely shouldn’t have. “There are a few warning signs that parents need to be aware of that should prompt a medical visit for evaluation,”…