The Hidden Story Behind When Was the Chickenpox Vaccination Invented
The first time a child survived chickenpox without scarring was in 1974, but the real turning point came when researchers asked: *What if we could prevent it entirely?* The answer emerged not from a single “eureka” moment but from decades of virology, serendipity, and a stubborn refusal to accept varicella as an inevitable rite of … Read more
