Why in News? 

It is observed every year on March 16 to spread awareness about the importance of vaccines. 

History 

• It was first observed on March 16, 1995, when the first oral polio vaccine was given under the Pulse Polio Immunization Program.  
• The goal was to eliminate polio from India, and by 2014, the World Health Organization (WHO) declared India a polio-free country. 
• Following the success of the Pulse Polio Program, India launched several other vaccination campaigns to prevent diseases like hepatitis, tuberculosis, and measles.  

Significance 

National Vaccination Day raises awareness about the role of vaccines in protecting public health and preventing deadly diseases. It also honors healthcare workers who ensure vaccines reach people across India. 

What is Vaccination?  

Vaccination is a process that strengthens the body's immune system against specific diseases. It helps the body recognize and fight infections, preventing many life-threatening illnesses. 

Why is Vaccination Important? 

Vaccines help prevent serious diseases such as: 

• Polio – Can cause paralysis in children. 
• Tetanus – Leads to muscle stiffness and serious infections. 
• Diphtheria – Causes severe breathing problems. 
• Whooping Cough – Dangerous for infants. 
• Hepatitis B – Prevents liver infections. 
• Tuberculosis (TB) – Protects against lung infections. 
• COVID-19 – Recently developed vaccines helped control the pandemic.