US authorities licensed the vaccine on the day the trial results were presented.
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WHO formally came into being as countries sought coordinated approaches to disease and health care.
Health is defined beyond the absence of disease 7 April 1948
The constitution described health as physical, mental and social well-being, setting an ambitious goal.
World Health Day marks a founding date 7 April 1948
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Polio vaccine trial results are announced 12 April 1955
Investigators reported that the inactivated vaccine had protected participants in a large trial.
👉 Salk’s inactivated polio vaccine is licensed Current 12 April 1955
US authorities licensed the vaccine on the day the trial results were presented.
A major childhood disease becomes preventable 12 April 1955
The announcement opened a new phase of polio immunization, requiring manufacturing and access.
Large vaccine trial shapes public-health practice 12 April 1955
The findings followed participation by many families, healthcare workers and researchers.
US regulators approve a contraceptive pill 9 May 1960
The FDA approved Enovid for use as an oral contraceptive, expanding control over pregnancy.
The medicine made hormonal prevention of pregnancy available by prescription.
The development included trials among women in Puerto Rico and raises questions about consent and power.