Letter: Widal tests for water workers.

Abstract

The interpretation placed on their findings by Dr. Petrucco and his colleagues may well have been influenced by recent descriptions of glomerulopathy in the pregnant mouse an;d guinea-pig. An immunological reaction involving the HLA system may well occur, but I personally am not convinced on this evidence that it is the explanation for pre-eclampsia.-I am, etc.,

Waterborne infectious disease in Britain

“…Laboratory facilities are limited and the annual cost of the tests at present done must be considerable. The education of all employees in the principles of hygiene and safety by clear codes of practice would not only be more economical but would in our opinion be more likely to prevent the recurrence of an outbreak such as that at Croydon than the continued use of a mass screening test of questionable value (Rahman & Cowan, 1974). There is, however, a clear need for more stringent medical assessment as opposed to laboratory screening of relevant personnel.…”