Before the introduction of the first vaccine in 1796, Americans had limited defense against infectious diseases such as smallpox, measles, and diphtheria. Over the course of 250 years, vaccines have played a critical role in reducing or eliminating many illnesses, preventing countless infections and deaths. Dr. Marc Siegel, Fox News senior medical analyst, emphasized that vaccines are considered among the most important public health tools after sanitation.
Smallpox
Smallpox was a highly contagious and deadly viral disease caused by the variola virus. It killed about 30% of those infected. In 1796, Edward Jenner developed the smallpox vaccine, which ultimately led to the global eradication of the disease. Today, the vaccine is primarily used for specific military, laboratory, and emergency purposes.
“Vaccines are widely seen as the greatest public health tool after sanitation.”
Rabies
Rabies is a fatal viral disease that spreads through the saliva of infected animals. Louis Pasteur first developed the rabies vaccine in 1885. Vaccination after exposure is crucial as rabies is almost always fatal once symptoms begin.
Diphtheria
Diphtheria, a bacterial infection, can cause a thick coating in the throat. Before the vaccine’s introduction in the 1920s, it was a major cause of illness in young Americans. Today, diphtheria is rare due to widespread vaccination efforts.
Tetanus
Tetanus is a bacterial disease causing severe muscle spasms. The tetanus vaccine, developed in the 1920s, prevented many deaths as severe spasms could lead to breathing difficulties. Regular vaccinations are still recommended.
Pertussis (Whooping Cough)
Whooping cough is a bacterial infection leading to severe coughing fits. The introduction of the pertussis vaccine in the 1910s followed by the combination DTP vaccine in the 1940s reduced the cases dramatically.
Influenza
Influenza can lead to severe illness. The first flu vaccine was licensed in 1945. Since then, vaccination has reduced the risk of flu-related hospitalization and death significantly.
Polio
Polio is a viral disease that can cause paralysis. Jonas Salk developed the first polio vaccine in 1955. By 1979, the U.S. was declared free of wild poliovirus.
MMR (Measles, Mumps, Rubella)
Before the MMR vaccine, these diseases were common and could cause serious complications. MMR was introduced in 1971, dramatically reducing the incidence of these diseases.
Hepatitis B
Hepatitis B is a liver infection. Before vaccination, it was a significant public health threat. The 1981 licensing of the hepatitis B vaccine led to a substantial decline in new infections.
Hib
Haemophilus influenzae type b (Hib) was a leading cause of bacterial meningitis in young children. Now, due to vaccination introduced in 1985, Hib infections are rare.
Chickenpox
Chickenpox was highly contagious prior to the vaccine’s availability in 1995. Since then, severe complications from varicella have declined by over 90%.
Hepatitis A
The hepatitis A vaccine, introduced in 1995, reduced infections by over 95% after routine vaccination.
Pneumococcal Disease
Pneumococcal conjugate vaccination, licensed in 2000, significantly cut disease rates, especially among children.
HPV
The HPV vaccine, licensed in 2006, was the first designed to prevent cancer-causing infections and has led to decreased infection rates.
Rotavirus
Prior to 2006, rotavirus infection was almost inevitable by age five. Vaccination has since alleviated its burden.
Shingles
Shingles affected about one million people yearly before vaccination became available in 2006. Shingrix, introduced in 2017, has reduced the risk of painful rash significantly.
COVID-19
COVID-19 has caused extensive challenges globally. The first vaccines, authorized in December 2020, have been critical in preventing severe illness and saving lives. Vaccination guidance continues to evolve based on age and risk.
Experts recommend consulting with a healthcare provider regarding individual vaccine needs.
Vaccines have made profound impacts in the last century, ultimately pushing several pathogens out of common human experience.