Karl Deisseroth, one of the three recipients of the 2026 Nobel Prize in medicine, poses for a photo on Monday, Oct. 5, 2026, in Stanford, Calif. (AP Photo/Noah Berger)

Karl Deisseroth, one of the three recipients of the 2026 Nobel Prize in medicine, talks on his mobile at home on Monday, Oct. 5, 2026, in Stanford, Calif. (AP Photo/Noah Berger)

Karl Deisseroth, one of the three recipients of the 2026 Nobel Prize in medicine, smiles at home on Monday, Oct. 5, 2026, in Stanford, Calif. (AP Photo/Noah Berger)

Karl Deisseroth, one of the three recipients of the 2026 Nobel Prize in medicine, talks to his wife Michelle Monje-Deisseroth at home Monday, Oct. 5, 2026, in Stanford, Calif. (AP Photo/Noah Berger)

FILE -An aerial view of the slum of Kibera with the Nairobi skyline in the background, Kenya, Jan. 4, 2008. (AP Photo/Riccardo Gangale, File)

People put on masks at the entrance of The Nairobi Hospital where Kenya's first Ebola virus patient was treated and died, Tuesday, Oct. 6, 2026. (AP Photo/Andrew Kasuku)

People walk in front of The Nairobi Hospital where Kenya's first Ebola virus patient was treated and died, Tuesday, Oct. 6, 2026. (AP Photo/Andrew Kasuku)

A security guard wears a mask at the Ministry of Health after Kenya announced the first case of Ebola, in Nairobi, Tuesday, Oct. 6, 2026. (AP Photo/Andrew Kasuku)