polio vaccine: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Modified link of Web site: National Center for Biotechnology Information - Polio Vaccine. | Oct 25, 2026 | ||
| Add new Web site: Cleveland Clinic - Poliovirus Vaccine Injection. | Sep 06, 2025 | ||
| Add new Web site: Khan Academy - Polio vaccinations. | Jul 22, 2025 | ||
| Media added. | Feb 24, 2025 | ||
| Added information on different types of polio vaccine. | Jan 23, 2025 | ||
| Add new Web site: Mount Sinai - Polio vaccine - what you need to know. | Feb 16, 2024 | ||
| Media added. | May 15, 2023 | ||
| Add new Web site: Live Science - Who created the polio vaccine? | Apr 28, 2023 | ||
| Add new Web site: Verywell Health - How to Know If You Are Fully Vaccinated Against Polio. | Jan 05, 2023 | ||
| Add new Web site: World Health Organization - Polio Vaccines (PDF). | Oct 25, 2022 | ||
| Add new Web site: Centers for Disease Control and Prevention - Polio Vaccination. | Oct 21, 2022 | ||
| Add new Web site: National Center for Biotechnology Information - Polio Vaccine. | Aug 26, 2022 | ||
| Added mention of a live oral polio vaccine developed in the 1950s by Hilary Koprowski. | Apr 20, 2022 | ||
| Added a photo of a child being given a polio vaccine and an image of a 1963 poster encouraging the public to receive an oral polio vaccine. | Feb 02, 2022 | ||
| Changed "poliovirus types (known as types I, II, and III)" to "serotypes-PV1, PV2, and PV3" for consistency with entry on polio. | Nov 07, 2011 | ||
| Added information on bivalent oral poliovirus vaccine (bOPV). | Oct 26, 2010 | ||
| Updated to include information on the history of polio vaccines. | Feb 13, 2009 | ||
| Article revised and updated. | Oct 17, 2008 | ||
| Added new Web site: How Stuff Works - Healthguide - Polio Immunization (Vaccine). | Oct 01, 2008 | ||
| Added new Web site: Access Excellence - Development of Polio Vaccines. | May 02, 2008 | ||
| Article revised. | Apr 07, 1999 | ||
| Article added to new online database. | Jul 20, 1998 |
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