Cleaning and disinfection of equipment for gastrointestinal flexible endoscopy: interim recommendations of a Working Party of the British Society of Gastroenterology.

Cleaning and disinfection of equipment for gastrointestinal flexible endoscopy: interim recommendations of a Working Party of the British Society of Gastroenterology SIR,-The report by the Working Party (Gut 1988; 29: 1134-51) has been drawn to our attention and in particular, the section regarding management of HIV infected patients. The authors incorrectly state that 'there is no information on the activity of common disinfectants against the intermediate forms and cysts of cryptosporidium'. The relevance of 'intermediate forms' -that is, endogenous or tissue stages, in