155 countries are switching to a new polio vaccine. Here’s why

Name: 155 countries are switching to a new polio vaccine. Here’s why
Uploaded: 2018-02-16T16:00:24+00:00
Duration: 62 s
Description: Between 17 April and 1 May, 155 countries, including India, will switch to a new polio vaccine as part of a final push to eradicate polio by eliminating one major threat: vaccine-derived polio.

1 просмотров 16.02.2018 00:01:02

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Between 17 April and 1 May, 155 countries, including India, will switch to a new polio vaccine as part of a final push to eradicate polio by eliminating one major threat: vaccine-derived polio.

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155 countries are switching to a new polio vaccine. Here’s why

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