Volume 7, Number 6—December 2001
Effect of Prevention Measures on Incidence of Human Listeriosis, France, 1987-1997
|1987a||1997 b||Percent changec||1987a||1997b||Percent change|
|No predisposing condition; <65 years of age||66||13||-80||36||6||-84|
|Predisposing condition; >65 years of age||51||22||-57||19||8||-58|
aHospital laboratory survey.
bNational Reference Center.
cThe percent change in number of cases has been calculated instead of the percent change in incidence, to facilitate comparison with the figures from the subset of hospitals. As a result, the figures on percent change are slightly lower than those in Table 1, which take into account the increase in the French population during the 10-year period.
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