Measles outbreaks in US and Canada show that MMR vaccines are needed more than ever

Measles is one of the most challenging diseases to control. It requires a sustained uptake of well over 90% of two doses of a measles-containing vaccine such as MMR. But since the COVID pandemic, there has been a decline in the uptake of routine vaccines in many countries, including the US, Canada and Europe, resulting in outbreaks of the disease.

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