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Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
The list is based on CIA World Factbook 2023 estimates, unless indicated otherwise. Many developing countries have far higher proportions of young people, and lower proportions of older people, than some developed countries, and thus may have much higher age-specific mortality rates while having lower crude mortality rates.
The first cases of West Nile disease in the United States occurred in 1999 in New York. In the first three years only a small number of human cases were diagnosed, all in the Eastern or Southern U.S. (149 cases and 19 deaths, 1999–2001).
In 2022, the county recorded one death and five cases, the data show. West Nile virus killed seven people last year across the four-county region of Sacramento, El Dorado, Placer and Yolo ...
Two additional cases of West Nile virus have been confirmed in humans in Massachusetts, as public health officials raise the risk level in 9 more cities and town.. So far this summer, there have ...
A San Fernando Valley resident is the first person in L.A. County to die this year from West Nile virus, a mosquito-transmitted illness that can cause lethal inflammation in the brain.
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. [53] In about 80% of infections people have few or no symptoms . [ 54 ] About 20% of people develop a fever , headache, vomiting, or a rash. [ 53 ]
Cumulative total of the entire country: 1,590 cases. (Current as of Aug 28, 2012). [1] U.S. West Nile virus (WNV) neuroinvasive disease incidence as of Sep 4, 2012. The West Nile virus quickly spread across the United States after the first reported cases in Queens, New York, in 1999. The virus is believed to have entered in an infected bird or ...