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The yardstick for human mortality from H5N1 is the case-fatality rate (CFR); the ratio of the number of confirmed human deaths resulting from infection of H5N1 to the number of those confirmed cases of infection with the virus. For example, if there are 100 confirmed cases of a disease and 50 die as a consequence, then the CFR is 50%.
US influenza statistics by flu season. From the Centers for Disease Control and Prevention page called "Disease Burden of Flu": "Each year CDC estimates the burden of influenza in the U.S. CDC uses modeling to estimate the number of flu illnesses, medical visits, hospitalizations, and deaths related to flu that occurred in a given season.
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.
New Mexico was one of seven states across the country where influenza cases were among the highest for the week ending Jan. 13, according to an interactive map of influenza cases by the U.S ...
Influenza cases are on the rise as flu season is in full swing. Dr. Mysheika Roberts, of Columbus Public Health, offers tips for stopping the spread.
Influenza mortality in symptomatic cases in the US for the 2018/2019 season [66] Influenza is typically characterized by seasonal epidemics and sporadic pandemics. Most of the burden of influenza is a result of flu seasons caused by influenza A virus and influenza B virus.
The rates of excess pneumonia and influenza mortality in these places was higher than those which would later be experienced in both the 1957 and 1968 pandemics. Liverpool in particular experienced a peak in weekly mortality even higher than that of the 1918 pandemic. [37] Northern Europe also experienced severe epidemics this season.
There are four different types of influenza virus: A, B, C, and D. Influenza C usually causes only mild illness while D mostly affects animals, especially cattle.