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"February 17, 2022
Dr. Michiaki Takahashi's 94th Birthday

Today’s Doodle, illustrated by Tokyo, Japan-based guest artist Tatsuro Kiuchi, celebrates Japanese virologist Dr. Michiaki Takahashi, who developed the first vaccine against chickenpox. Takahashi’s vaccine has since been administered to millions of children around the world as an effective measure to prevent severe cases of the contagious viral disease and its transmission."

https://www.google.com/doodles/dr-michiaki-takahashis-94th-birthday