A new study claims that the 2019 WA State law that removed the personal exemption to MMR (measles-mumps-rubella vaccine) for school and daycare was “effective”. The authors assert that MMR exemptions overall decreased 41%, and yet religious exemptions increased 367%. What is going on? School immunization data expert Karl Kanthak explains what the data really says and why it matters.

Reference Links:

https://karlkanthak.substack.com

https://ajph.aphapublications.org/doi/10.2105/AJPH.2023.307285

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