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Despite the high morbidity and mortality rates that resulted from the epidemic, the Spanish flu began to fade from public awareness over the decades until the arrival of news about bird flu and other pandemics in the 1990s and 2000s. [320] [321] This has led some historians to label the Spanish flu a "forgotten pandemic". [177]
[8] [13] Though it used to be believed that it was connected to the Spanish flu epidemic, modern research provides arguments against this claim. [14] Some studies have explored its origins in an autoimmune response, [ 5 ] and, separately or in relation to an immune response, links to pathologies of infectious disease – viral and bacterial ...
These patients, despite their various previous diagnoses, had a similar pattern of symptoms. This led him to suggest a novel disease, which he named Encephalitis lethargica. [ 3 ] In France, physician René Cruchet was encountering similar patterns, and published his findings within a few days of Constantin von Economo.
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 flu is generally accompanied by body aches and muscle pains, which are rare in RSV cases. Difficulty breathing is much more common in RSV and COVID cases than in flu cases.
The bird flu outbreak has taken concerning turns, with more than 60 human cases confirmed. Experts outlined four signs that the virus is going in the wrong direction.
Fever and symptoms of respiratory illness (not necessarily pneumonia; e.g., cough, shortness of breath) and being in a healthcare facility (as a patient, worker, or visitor) within 14 days before symptom onset in a country or territory in or near the Arabian Peninsula in which recent healthcare-associated cases of MERS have been identified.
The resulting number could potentially be an overestimate given that mild cases of H5N1 can go undetected and unreported. How deadly bird flu is in humans may depend on a number of other factors ...