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Medicine

Immunization Schedules and Vaccine Contraindications

Quick fact

The Centers for Disease Control and Prevention (CDC) updates its immunization schedules annually, and some vaccines require multiple doses weeks or months apart to ensure a robust and lasting immune response.

Why this is interesting

Vaccines save millions of lives, but did you know that the timing of each shot is as carefully engineered as the vaccine itself? Why does your doctor check your medical history before every vaccination?