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Continue to ChatVaccine-preventable diseases have almost disappeared. Why should they be vaccinated? https://www.hizy.net/archives/vaccine-preventable-diseases-have-almost-disappeared-why-should-they-be-vaccinated/
Vaccine-preventable diseases have almost disappeared. Why should they be vaccinated? https://www.hizy.net/archives/vaccine-preventable-diseases-have-almost-disappeared-why-should-they-be-vaccinated/