Vaccines are biological preparations that help the body develop immunity against diseases.
They contain weakened or inactive parts of a pathogen, such as bacteria or viruses.
When a vaccine is introduced into the body, it stimulates the immune system.
The immune system produces antibodies that can fight the real pathogen if it enters later.

Vaccines protect individuals from dangerous diseases like polio, measles, and tetanus.
They are an important tool for preventing outbreaks and controlling epidemics.
Immunity is the body’s ability to resist infections caused by harmful organisms.
There are two types of immunity: innate immunity and adaptive immunity.

Innate immunity is the natural protection we are born with, such as skin and mucus.
Adaptive immunity develops after exposure to a pathogen or through vaccination.
Vaccines provide artificial immunity without causing the actual disease.
Some vaccines require booster doses to maintain long-term protection.

Herd immunity occurs when a large population is vaccinated, reducing disease spread.
Vaccination not only protects individuals but also helps vulnerable groups.
Modern vaccines are tested for safety and effectiveness before use.
Immunization programs have saved millions of lives worldwide.

Vaccines are essential for preventing serious illnesses and improving public health.
It is important to follow recommended vaccination schedules for maximum protection.