From 1903--1904, he organized and conducted a parasite treatment campaign, which cured approximately 300,000 persons (one-third of the Puerto Rico population) and reduced the death rate from this anemia by 90 percent.
He organized. This was from 1903--1904. He conducted a parasite treatment campaign. This was from 1903--1904. He reduced the death rate from this anemia by 90 percent. This was from 1903--1904. A parasite treatment campaign cured approximately 300,000 persons (one-third of the Puerto Rico population).