Polio vaccine

Period

1955

Map

Inventions map

Polio vaccine is a vaccine used to prevent poliomyelitis (polio). Two types are used: an inactivated poliovirus given by injection (IPV) and a weakened poliovirus given by mouth (OPV). The World Health Organization (WHO) recommends all children be fully vaccinated against polio. The two vaccines have eliminated polio from most of the world, and reduced the number of cases reported each year from an estimated 350,000 in 1988 to 33 in 2018.

Sources: Wikipedia — Polio vaccine · CC BY-SA 4.0

Earlier and later events nearby

1. 1863Battle of Gettysburg
2. 1863Emancipation Proclamation
3. 1867Alaska Purchase
4. 1955Polio vaccineThis page
5. 1964Civil Rights Act of 1964
6. 1968Treaty on the Non-Proliferation of Nuclear Weapons
7. 2021January 6 United States Capitol attack

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States that held this place in the historical borders data (Cliopatria). Years are approximate, as fine as the data's snapshots (every few years to a century). Tap to open the map for that year.

Other maps for this period

• War mapsAlgerian War
• War mapsVietnam War
• Epidemics mapThird plague pandemic