Weather or not

the presence of Cryptosporidia during the next year. We hope to determine the incidence, seasonal variations (if any), the source of Cryptosporidia, and compare patients with diarrhoeal illness with negative controls from the Hospital. Acknowledgements We thank SisterR. Moody, SisterS. Whiteand the staff of Ward 4 at the Alice Springs Hospital for their invaluable support. We also thank Dr T. W. Steele, Mr S. McDermott, Ms N_ Sangster and the staffof the Enteric Laboratory (lMVS) for their assistance. R. Lumb, BAppSc Microbiology Department Instituteof Medical and Veterinary Science Adelaide, SA 5000 J. Erlich, FRACP Paediatric Department Alice Springs Hospital Alice Springs, NT 5720 G. P. Dandson,FRACP Gastoenterology Department Adelaide Children's Hospital North Adelaide, SA 5006