1.Rendtorff RC. The experimental transmission of Giardia lamblia among volunteer subjects. In: Jakubowski W, Hoff JC, eds. Waterborne transmission of giardiasis. U.S. Environmental Protection Agency. Office of Research and Development, Environmental Research Center, Cincinnati, Ohio 45268, USA, EPA-600/9–79–001. 1979; 64–81.
2.Miller RA, Brondson MA, Morton WR. Experimental cryptosporidiosis in a primate model. J Infect Dis 1990; 161: 312–5.
3.Du Pont HL, Chappell CL, Sterling CR, Okhuysen PC, Rose JB, Jakubowski W. Infectivity of Cryptosporidium parvum for adult humans. N Engl J Med 1995; 332: 855–9.
4.Jephcott AE, Begg TN, Baker AI. Outbreak of giardiasis associated with mains water in United Kingdom. Lancet 1986; i: 370–2.
5.Ljungstrom I, Castor B. Immune response to Giardia lamblia in a water-borne outbreak of giardiasis in Sweden. J Med Microbiol 1992; 36: 347–52.
6.Hayes EB, Matte TD, O'Brien TR et al. , Large community outbreak of cryptosporidiosis due to contamination of a filtered public water supply. N Engl J Med 1989; 320: 1372–6.
7.MacKenzie WR, Hoxie NJ, Proctor ME et al. , A massive outbreak in Milwaukee of Cryptosporidium infection transmitted through the public water supply. N Engl J Med 1994; 331: 161–7.
8.Danciger M, Lopez M. Numbers of Giardia in the feces of infected children. Am J Trop Med Hyg 1975; 24: 237–42.
9.Lengerich EJ, Addiss DG, Juranek DD. Severe giardiasis in the United States. Clin Infect Dis 1994; 18: 760–3.
10.World Health Organisation. International classification of diseases. Manual of the international statistical classification of diseases, injury and causes of death. Geneva: World Health Organisation, 1977.
11.Information and Statistics Division. Scottish Health Service Costs. Year ended 31st 03 1994. National Health Service in Scotland, Information and Statistics Division, Trinity Park House, South Trinity Road, Edinburgh EH5 3SQ. 1995.
12.Campbell D. Cryptosporidiosis in Scotland - 1994. SCIEH Weekly Report 1995; 29: 46.
13.Overturf GD. Editorial response: endemic giardiasis in the United States - role of the day-care center. Clin Infect Dis 1994; 18: 764–5.
14.Smith HV, Robertson LJ, Campbell AT, Girdwood RWA. Giardia and giardiasis: what's in a name. Microbiol Eur 1995; 3: 22–9.
15.Ungar BLP. Cryptosporidiosis in humans (Homo sapiens). In: Dubey JP, Speer CA, Fayer R, eds. Cryptosporidiosis of man and animals. Boca Raton: CRC Press, 1990; 59–82.
16.Webster ADB. Giardiasis and immunodeficiency diseases. Trans Royal Soc Trop Med Hyg 1980; 74: 440–8.
17.Farthing MJG. Giardiasis as a disease. In: Thompson RCA, Reynoldson JA, Lymberry AJ, eds. Giardia: from molecules to disease. Wallingford, UK: CAB International, 1994; 15–37.
18.Rabbani GH, Islam A. Giardiasis in humans: populations most at risk and prospects for control. In: Thompson RCA, Reynoldson JA, Lymberry AJ, eds. Giardia: from molecules to disease. Wallingford, UK: CAB International, 1994; 217–49.
19.Udezulu IA, Visvesvara GA, Moss DM, Leitch GA. Isolation of Giardia lamblia (WB strain) clones with distinct surface protein and antigenic profiles and differing infectivity and virulence. Infect Immun 1992; 60: 2274–80.
20. Anonymous. WHO/PAHO informal consultation on intestinal protozoal infections. WHO/CDS/IPI/92.2., 1992.