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Explained in plain English

Why are cases rising now?

The increase in measles cases, reaching a 35-year high in the US, is primarily due to lower immunisation rates. This decline is linked to growing vaccine hesitancy, where people are reluctant or refuse vaccinations. When fewer people are vaccinated, 'herd immunity' weakens, allowing preventable diseases like measles to spread more easily through communities, as tragically seen in Pennsylvania.

Stories that explain this

Two unvaccinated people die from measles in Pennsylvania

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