What are Vaccines?
Vaccines are biological products designed to protect individuals from infectious diseases by stimulating the immune system to recognize and fight pathogens such as bacteria, viruses, or toxins. They are typically administered through injections, but some are delivered orally or nasally.
How Vaccines Work
- Mimic Infection: Vaccines introduce a harmless component of a pathogen (e.g., proteins, inactivated virus, or mRNA) into the body.
- Immune Response: The immune system recognizes the vaccine material as foreign and mounts a response by producing antibodies and activating T-cells.
- Memory Development: The immune system “remembers” the pathogen, enabling it to respond quickly and effectively if exposed to the actual infectious agent later.
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