During a yellow fever epidemic in Chattanooga, Tennessee, in 1878, Tipperary-born Father Patrick Ryan, 33, heroically stayed to minister to the sick and dying while most others fled.

Source: https://www.ncregister.com/features/tune-into-the-consistory-of-cardinals-and-synod-on-synodality-s-opening-mass

He arranged with the Primate Center of Rio de Janeiro to begin trials of different doses of yellow fever vaccines on about 60 monkeys, close relatives of the tamarins, in January 2018.

Source: https://gorgenewscenter.com/2023/02/01/race-to-vaccinate-rare-wild-monkeys-gives-hope-for-survival/

The flying pests are responsible for more than 400,000 deaths a year from diseases including malaria, dengue, and yellow fever.

Source: https://itemlive.com/2023/08/06/dont-panic-over-malaria-but-do-worry-about-mosquitoes/

“There is no cure for yellow fever.

Source: https://www.africanews.it/english/uganda-introduces-life-saving-yellow-fever-vaccine-into-routine-immunization-programme/