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Tim Harford explains the numbers and statistics in the news and in life

Tim Harford explains the numbers and statistics in the news and in life.

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More or Less: Vaccines: The Importance of The Herd and Social Media

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MOL Vaccines.jpg

27/10/2018 GMT

Vaccines: The Importance of The Herd and Social Media

BBC World Service - More or Less, Vaccines: The Importance of The Herd and Social Media

What proportion of a population needs to be vaccinated to stop a disease spreading?

The World Health Organisation has reported that so far this year over 47,000 adults and children in the European area have been infected with measles. For the whole of 2017 there were almost 24,000 cases and in 2016 the figure was  5,273. So why are the numbers growing? We speak to experts about how herd immunity, government policy and social media can affect infection rates.

Presenter: Lizzy McNeill
Producer:  Lizzy McNeill 


(image: Vials of measles, mumps and rubella vaccine on display at Walgreens in Mill Valley, California. Photo Credit: Justin Sullivan/Getty Images)

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