Rishad Merchant in Arlington, Texas

This article explains how doctors use three key tools to fight infections—and how patients and caregivers can benefit from them. Antibiotics treat bacterial illnesses, antivirals target specific viruses, and vaccines help your immune system prevent disease before it starts. You’ll learn why antibiotics don’t work for colds or flu, how resistance develops when medicines are misused, and why completing prescribed treatments matters. The guide also covers vaccine safety, common side effects, and how immunization protects both individuals and communities. With clear, reliable information, it helps you understand your options, ask informed questions, and partner with your care team for the best outcomes.