Pfizer head of vaccine research: “I took this very personally… nothing else mattered”
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Pfizer head of vaccine research: “I took this very personally… nothing else mattered”

Pfizer head of vaccine research: “I took this very personally… nothing else mattered”

Kathrin Jansen saw the deadly impact of COVID-19 in New York and it fueled her desire to develop a vaccine. 60 Minutes reports, Sunday.

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