value of vaccines

Value of Vaccines

Five days into India’s mass vaccination program me, there are some concerns over vaccine hesitancy. At this crucial moment in the fight against the novel coronavirus pandemic, two of the country’s most eminent vaccine scientists weigh in on some old and new questions.

Vaccines are a product of science. If the scientific method and process is followed scrupulously, based on data and evidence, there should be little room for doubt. This is a good time to revisit some of the usual questions regarding vaccines, and to address fresh questions that are emerging.

How do vaccines work; and do they help?

A vaccine is a substance that resembles the disease-causing agent (called pathogen, the coronavirus in this case) that trains the body’s immune system and creates a ‘memory’. When the pathogen infects in future, this memory is rapidly deployed to destroy it and prevent disease.