The category of drugs used to prevent infectious diseases?

• A drug is a type of substance that is used to prevent, diagnose, treat, or relieve symptoms of a disease.
• The vaccine is the category of drugs that are used to prevent infectious diseases.
• A vaccine is a biological substance designed to protect humans from infections caused by bacteria and viruses.
• Vaccines are also called immunizations because they take advantage of our natural immune system’s ability to prevent infectious illnesses.
• The various examples of vaccines are - the Chickenpox vaccine, Influenza vaccine, etc.