In 1796, when Edward Jenner developed the first vaccine, against the smallpox virus, no one knew what viruses were, let alone connected them to diseases.
Many believed Jenner’s vaccine worked because it depleted the body of the specific…
In 1796, when Edward Jenner developed the first vaccine, against the smallpox virus, no one knew what viruses were, let alone connected them to diseases.
Many believed Jenner’s vaccine worked because it depleted the body of the specific…