Louise Pearce
American pathologist (1885-1959) · United States · On the map · Doctors · Died at 74
Louise Pearce was an American pathologist at the Rockefeller Institute who helped develop a treatment for African sleeping sickness (trypanosomiasis). Sleeping sickness was a fatal epidemic which had devastated areas of Africa, killing two-thirds of the population of the Uganda protectorate between 1900 and 1906 alone.
Louise Pearce is read about 7 times a day, in 10 languages.
A typical day, 30 days to 24 June 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.
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With chemists Walter Abraham Jacobs and Michael Heidelberger and pathologist Wade Hampton Brown, Pearce worked to develop and test arsenic-based drugs for its treatment. In 1920, Louise Pearce traveled to the Belgian Congo where she designed and carried out a drug testing protocol for human trials to establish tryparsamide's safety, effectiveness, and optimum dosage. Tryparsamide proved successful in combating the fatal epidemic, curing 80% of cases.
