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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]
Although a wide variety of bird species have been shown to contract and spread Influenza A virus subtype H5N1, from waterfowl to poultry and birds of prey, mammalian infections have been of particular interest to researchers due to their potential to develop mutations that increase the risk of mammal-to-mammal spread and transmission to and among humans.
Usually other differences also exist. Currently, there is no human-adapted form of H5N1 influenza, so all humans who have caught it so far have caught avian H5N1. Human flu symptoms usually include fever, cough, sore throat, muscle aches, conjunctivitis and, in severe cases, severe breathing problems and pneumonia that may be fatal.
The spread of the H5N1 bird flu virus among dairy cows has worried health experts, who say it increases the risk of the virus becoming a greater threat to humans. (Tomas Ovalle / For The Times)
Since the bird flu outbreak began earlier this year connected to dairy cows and poultry, there have been 55 human cases reported in the U.S., according to the Centers for Disease Control and ...
H5N1 bird flu virus particles are seen under a microscope. There are nearly 50 confirmed human infections, and a recent study found that some dairy workers had signs of infection even when they ...
Standing still however may cause the cougar to consider a person easy prey. [5] Exaggerating the threat to the animal through intense eye contact, loud shouting, and any other action to appear larger and more menacing may make the animal retreat. Humans are capable of fending off cougars, as adult humans are generally larger.
A human H5N1 pandemic might emerge with initial lethality resembling that over-50% case fatality now observed in pre-pandemic H5N1 human cases, rather than with the still-high 1-2% seen with the Spanish flu or with the lower rates seen in the two more recent influenza pandemics. [48]