Words similar to cryptosporidiosis
Example sentences for: cryptosporidiosis
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The number of cryptosporidiosis cases decreased annually: 126 cases were reported in 1995, 69 in 1996, 38 in 1997, and 32 in 1998 [ 31 ] . In the year 2001, only 13 cases of cryptosporidiosis were recorded in the AIDS Registry [ 33 ] . Because of the small study size, our ability to more precisely calculate matched adjusted odds ratios for the multivariable model were limited.
A similar study conducted among immunocompetent persons in the same geographic region found that cryptosporidiosis was only associated with foreign travel but not tap water consumption [ 34 ] . This discordance in results supports the observation that host susceptibility, i.e., immune status, is the primary determinant of developing cryptosporidiosis among AIDS patients.
The methods we used to calculate the attributable fractions depend on two assumptions: the incidence of disease in the base population is sufficiently small so that the odds ratio provides a satisfactory estimate of the relative risk; and the cases in this study are representative of all cases in the population, thus allowing us to calculate the proportion of cases in each stratum of exposure categories [ 20 ] . The annual risk of a cryptosporidiosis diagnosis among AIDS patients during this study period was less than 1% [ 31 32 ] , sufficiently low so that the odds ratio approximates the relative risk.
Serologic evaluation of cases and controls for immunity to cryptosporidiosis prior to enrollment may be a worthwhile addition to such case-control studies.
Prior studies of cryptosporidiosis in the US among AIDS patients did not interview incident cases, and therefore, often did not have information on individual-level waterborne exposures [ 3 23 24 25 ] . We also detected a strong negative association between the pattern of always drinking bottled water at home and cryptosporidiosis.
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