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UN agency hails new polio vaccination regimen in South-East Asia that curbs impact on global supply

12 January 2017 – Amid a global shortage of injectable inactivated polio vaccines (IPV), a new inoculation regimen, employed by governments in the South-East Asian region, involving two fractional vaccine doses – each about a fifth of a full dose – provides the same level of protection against all polioviruses as does one full dose, the United Nations health agency said today.