Vaccines look simple—a vial, a needle—but behind every dose sits a decade of science. In this episode, Dr. Vishvaraj Rathod takes you inside the machinery behind immunity: fromJenner and Pasteur to modern platforms, from pre-clinical curiosity to Phase I–III trials, and from spotless manufacturing lines to post-approval safety (VAERS, Yellow Card, pharmacovigilance).You’ll hear why vaccine timelines take 10–15 years, how different platforms work (inactivated, live attenuated, protein subunit, viral vector, mRNA), and why “science is slow because safety is deliberate.” We close with herd immunity, protecting the vulnerable, and why vaccination is an act of compassion—not compliance.

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