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  1. Pfizer and BioNTech begins a clinical trial testing of its COVID-19 vaccine on healthy 6-month infants to 11-year-old children, which is a crucial step to vaccinating children.
  2. Pfizer and BioNTech begin a clinical trial testing of their COVID-19 vaccine on healthy children between the ages of 6 months and 11 years, which is a crucial step toward vaccinating children.
  3. Pfizer and BioNTech begin a clinical trial testing of their COVID-19 vaccine on healthy children between the ages of six months and 11 years, which is considered a crucial step towards vaccinating children.

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