case-fatality ratio


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case-fatality ratio

Epidemiology A value calculated as 100 cases of a disease 'X', divided by the number of persons with the disease who died in a given period of time; the resulting ratio is equal to the rate of a disease's occurrence. See Cause-fatality ratio.
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Nipah virus infection is associated with a case-fatality ratio of 40% to 76% in humans (1,2).
To the Editor: A high case-fatality ratio has often been associated with outbreaks of a new influenza virus but is less commonly reported in association with seasonal influenza.
However, in our study, the case-fatality ratio in patients infected by ST-32 did not differ from that in patients infected by other STs.
Since then, many other HPS cases have been reported, especially from the southern and southeastern regions of Brazil where agricultural activities are prominent; the mean case-fatality ratio is 48% (3).
The case-fatality ratio for all countries was <0.
Four of the confirmed case-patients died, a case-fatality ratio (CFR) of 1.
Although PUUV is thought to cause a mild form of HFRS, designated as nephropathia epidemica (NE), severe courses have been described with a case-fatality ratio of up to 0.
Includes only hospitalized patients who met a strict definition of severe malaria, which probably explains the considerably higher case-fatality ratio (CFR) noted in Gutten.
The Table shows the distribution of case-patients by age group, the median age of each group, and the case-fatality ratio (CFR) for the 4 seasonal 12-month periods.
Forty-two household flocks were considered likely to have been infected from January through March 2005 because >60% of the flock died, case-fatality ratio was 100%, and both young and mature birds died within 1 to 2 days.
Of the cases reported in 2008, 25 (6%) were stillborn and 3 (1%) died within 30 days of delivery, for a case-fatality ratio of 6.
Decision making based on flu severity in New York City proved challenging, given that the case-fatality ratio was unknown.