Cases of giardiasis by week of illness onset, Bergen municipality 1/9/2004 – 1/2/2005 (n = 963) and A. cases of giardiasis by week of diagnosis. B. prescriptions of metronidazol delivered from pharmacies to persons in Hordaland per week. C. number of consultations for diarrhoeal illness per week at Bergen legevakt. D. Termotolerant coliform bakteria (TCB) in raw water samples from watersupply A.
Nygård et al. BMC Public Health 2006 6:141 doi:10.1186/1471-2458-6-141