I asked my North Korean friend how it was to live in North Korea.
He said he can’t complain.
Yellow fever researchIn 1900, Private William Dean became the first volunteer with clear results that exposed himself to yellow fellow as part of the research carried out by Walter Reed at Quemados, Cuba. Dean allowed Mosquito No.12 to feed on his arm. Previous volunteers exposed to mosquitoes that had fed on infected persons had not developed yellow fever. James Carroll, a member of the Yellow Fever Commission, received the bite of an infected mosquito (with a longer incubation period), and on 29 Aug 1900 became severely ill with yellow fever. The results were not clear in that Carroll may have acquired the disease from exposure of some other kind. When William Dean, bitten by the same mosquito as Carroll, developed the disease, the mosquito theory was vaildated. Both recovered.« |
