Before the first successful vaccine in 1796, Americans faced lethal infectious diseases with no real defense. Over 250 years, immunization transformed from an experiment into the most critical public health tool after sanitation.
Dr. Marc Siegel, Fox News senior medical analyst, noted that vaccines fool the immune system into creating a memory response. "Overall, the benefit to the individual and society vastly outweighs any harm," he said.
Smallpox, which killed roughly 30% of those infected, was the first target. Edward Jenner’s 1796 discovery eventually led to global eradication. The smallpox vaccine is no longer routine, reserved mainly for military and emergency response.
Rabies, almost universally fatal once symptoms appear, saw its first vaccine developed by Louis Pasteur in 1885. Today, prompt post-exposure vaccination remains the standard.
The 1920s introduced critical vaccines against bacterial threats. Diphtheria, once a leading killer of children with up to 200,000 annual cases, was controlled through a toxoid vaccine. Tetanus and pertussis vaccines followed, with the combined DTP shot slashing whooping cough cases by over 90%.
The mid-20th century tackled viral devastation. The 1945 influenza vaccine tamed seasonal epidemics. Jonas Salk’s 1955 polio vaccine eliminated natural transmission in the U.S. by 1979. The 1971 MMR combination vaccine reduced measles, mumps, and rubella by over 99%.
Modern advancements continued with the Hepatitis B vaccine in 1981, which cut adolescent infections by 95%. The Hib vaccine, licensed in 1985, made a leading cause of pediatric meningitis exceptionally rare.
In the last three decades, protection expanded further. Vaccines for chickenpox (1995) and Hepatitis A (1995) reduced infections drastically. The pneumococcal conjugate vaccine (2000) curbed deadly bloodstream infections in children. Rotavirus immunization began preventing severe dehydrating diarrhea in 2006.
The HPV vaccine, licensed in 2006, became the first immunization designed to prevent multiple cancers. Shingrix, introduced in 2017, offered powerful protection against shingles nerve pain for older adults.
The COVID-19 pandemic spurred the fastest vaccine development in history. Receiving emergency authorization in December 2020, the shots significantly reduced severe illness and death. Dr. Siegel stated the vaccines "saved millions of lives around the world during the COVID pandemic."
Dr. Jacob Glanville of Centivax noted that many pathogens from early history are now unrecognizable because vaccines pushed them out of the human experience. He emphasized that this is the profound power of immunization.