Citiraj:
Anne Schuchat, director of CDC's National Center for Immunization and Respiratory Diseases, said that the American cases were found to be made up of genetic elements from four different flu viruses — North American swine influenza, North American avian influenza, human influenza A virus subtype H1N1, and swine influenza virus typically found in Asia and Europe - "an unusually mongrelised mix of genetic sequences."
http://en.wikipedia.org/wiki/2009_H1N1_flu_outbreakkoji mix, vjerovatno potpuno slučajno
a virus tipa A podtip H1N1 je izazvao do sada najsmrtonosniju pandemiju, tzv špansku gripu
i zanimljivo da taj virus tip A podtip H1N1 baš gotivi one od 25-45 godina
Citiraj:
The Spanish flu caused an unusual number of deaths because it, like H5N1, caused a cytokine storm in the body. The virus infected lung cells, leading to overstimulation of the immune system via release of cytokine bursts into the lung tissue. This leads to extensive leukocyte migration towards the lungs, causing destruction of lung tissue and secretion of liquid into the lung, and making it difficult for the patient to breathe. Due to the nature of the infection, people with a normal healthy immune system were more susceptible to the disease, such as young adults compared to young children and the elderly.
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