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Biomedical subjects

D S Davis

Publications and source records attributed to D S Davis.

7 recordsLinked to original sources

Organ transplants, foreign nationals, and the free rider problem.

There is strong sentiment for a policy which would exclude foreigners from access to organs from American cadaver donors. One common argument is that foreigners are 'free riders'; since they are not members of the community which gives organs, it would be unfair to allow them to receive such a scare resource. This essay examines the philosophical basis for the free rider argument, and compares that with the empirical data about organ donation in the U.S. The free rider argument ought not to be used to exclude foreign nationals because it is based on fallacious assumptions about group membership, and how the 'giving community' is defined. Polls show that even among the seventy-five per cent of Americans who support organ donation, only seventeen per cent had taken the small step of filling out donor cards. Therefore, it goes against logic to define the giving community as coextensive with American residency, while excluding foreigners who might well have become donors had they lived in countries which provided that option.

Emigration and Immigration

Brucella abortus in coyotes. I. A serologic and bacteriologic survey in eastern Texas.

Prevalence of Brucella abortus serum antibodies in coyotes from east central Texas was determined by the buffered Brucella antigen (card test), rivanol, standard agglutination tube, and cold complement fixation tube tests. Eighteen percent (9 of 51) of the coyotes were positive serologically. B. abortus biotype 1 was isolated from various tissues from 7 of 43 coyotes by bacteriologic culture. Congenital transmission was found.

Animals

Naturally occurring hepatozoonosis in a coyote.

Schizonts of Hepatozoon sp. were found in the myocardium of an adult cyote (Canis latrans) collected from the Aransas National Wildlife Refuge, Austwell, Texas. This constitutes the first time hepatozoonosis has been recorded in Canidae in the Western Hemisphere.

Animals