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FILE – In this Tuesday, March 16, 2021, file photo, Tanzania’s then Vice President Samia Suluhu Hassan speaks during a tour of the Tanga region of Tanzania. Samia Suluhu Hassan has been sworn in Friday, March 19, 2021, as Tanzania’s president, making history as the country’s first woman in the position following the death of her predecessor John Magufuli.
(AP Photo, File)
FILE - In this Tuesday, March 16, 2021, file photo, Tanzania's then Vice President Samia Suluhu Hassan speaks during a tour of the Tanga region of Tanzania. Samia Suluhu Hassan has been sworn in Friday, March 19, 2021, as Tanzania's president, making history as the country's first woman in the position following the death of her predecessor John Magufuli. (AP Photo, File)

Ozlem Tureci, co-founder of the Mainz-based coronavirus vaccine developer BioNTech, listens during an Axel Springer Award ceremony broadcast on the Internet, Thursday, March 18, 2021.
(Bernd von Jutrczenka/dpa via AP, Pool)
Ozlem Tureci, co-founder of the Mainz-based coronavirus vaccine developer BioNTech, listens during an Axel Springer Award ceremony broadcast on the Internet, Thursday, March 18, 2021. (Bernd von Jutrczenka/dpa via AP, Pool)