Answer:
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria.
Step-by-step explanation:
Antibiotics do not help fight viruses — they only cure bacterial infections, such as strep throat or whooping cough. Using antibiotics to treat a virus may actually do more harm than good.