| Haff disease | Haemoglobinuria, muscular weakness, and pains in the limbs, occurring in persons living in the vicinity of the Haff inlet, caused by arsenic poisoning from waste in a celluloid factory. Origin: Haff, an arm of the Baltic Sea in East Prussia (05 Mar 2000) |
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| Haffkine's vaccine | A killed culture of Vibrio cholerae in two strengths, a weaker one for the initial inoculation and a stronger one for the second inoculation 7 to 10 days after the first, a killed plague bacillus (Yersinia pestis) vaccine. (05 Mar 2000) |
| Haffkine, Waldemar | <person> Russian physician, 1860-1930. See: Haffkine's vaccine. (05 Mar 2000) |
| Hafnia | Genus in the tribe Klebsiella; a rare cause of nosocomial infection. There is a single species, Hafnia alvei. (05 Mar 2000) |
| hafnium | <chemical> Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol hf. Chemical name: Hafnium (12 Dec 1998) |
| hafussi bath | A modification of the Nauheim treatment, with only the hands and feet of the patient being immersed in hot water through which carbon dioxide gas is made to pass. Origin: Ger. Hand, hand, + fuss, foot (05 Mar 2000) |