For years, AIDS researchers tried to find the secret of how the AIDS virus mutated and they were not able to.
The 1918 pandemic did its worst after the first human death between week 16 and week 26 after the second wave and where the virus had mutated into the deadly human-to-human mass killer.
Or maybe this virus has mutated.
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The bugs mutate, and we try to find way to cure a disease caused by mutated virus.
Scientists first changed three amino acid molecules of H5N1 in a way they believed would boost the bug's affinity for human hosts, then infected ferrets with the mutated virus.
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While health officials caution that there are no indications the virus can be transmitted from one person to another, scientists who have studied its genetic sequence said this week that the virus may have recently mutated into a form that spreads more easily to other animals, potentially posing a bigger threat to humans.
The virus is believed to have first occurred in 2004 among greyhounds, according to the Centers for Disease Control and Prevention, and stemmed from a mutated equine flu virus that jumped species from horses to dogs.
And lab tests showed that the virus that infected the family had not mutated from its avian form, the researchers said.
The H7N9 virus, previously known only to infect birds, appears to have mutated so that it can more easily jump to animals such as pigs, meaning the range of potential hosts has expanded.
The H7N9 virus, previously known only to infect birds, appears to have mutated so that it can more easily jump to animals like pigs, meaning the range of potential hosts has expanded, the Associated Press reported Wednesday, citing a World Health Organization scientist studying the virus's genetic makeup.
The good news is that so far there's no sign that the H7N9 virus is spreading from person to person, but experts say it has mutated in a way that has left them a bit worried.
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