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Many Swine Flu Cases Have No Fever
May 12 2009
Many people suffering from swine influenza, even those who are severely ill, do not have fever, an odd feature of the new virus that could increase the difficulty of controlling the epidemic, said a leading American infectious-disease expert who examined cases in Mexico last week.
Fever is a hallmark of influenza, often rising abruptly to 104 degrees at the onset of illness. Because many infectious disease experts consider fever the most important sign of the disease, the presence of fever is a critical part of screening patients.
But about a third of the patients at two hospitals in Mexico City where the American expert, Dr. Richard P. Wenzel, consulted for four days last week had no fever when screened, he said.
“It surprised me and my Mexican colleagues, because the textbooks say that in an influenza outbreak the predictive value of fever and cough is 90 percent,” Dr. Wenzel said by telephone from Virginia Commonwealth University in Richmond, where he is chairman of the department of internal medicine.
The new flu, an analytical approach Thread makes the Top Banner, but, not...
Mysterious U.S. Swine Flu Probe Widens as Mexico Finds Swine Flu *updated*
Swine Flu news and updates thread
Hmmm...a serious flaw in yer computations
Gibbs, who studies the evolution of viruses, said the genes of the novel H1N1 look like they evolved at a faster rate than would have been expected if the virus had just emerged from pigs.
While that could mean the virus spent some time evolving in another, intermediary host - Gibbs listed birds or marine mammals as possibilities - the unusual evolutionary speed could also have been the product of the virus was being grown in eggs in a laboratory, he said.
That raises the spectre of human error resulting in the accidental release of the virus, Gibbs suggested Tuesday from his home in Canberra.
"We don't see evidence that there's accelerated evolution indicating that there would have been a new host that the virus was introduced into, be it eggs or any other host," said Dr. Nancy Cox, head of the influenza division at the U.S. Centers for Disease Control in Atlanta.
Gavin Smith, a researcher trying to trace the origins of the new virus, criticized Gibbs for publicizing his claim before publishing his analyses in a peer-reviewed journal.
Peer review would have allowed people knowledgeable about flu virus evolution to kick the tires, so to speak, of this theory and then decide whether alarms needed to be sounded.
"I think it's irresponsible to be making those conclusions before anything has been sent for peer-review," said Smith, a virologist and evolutionary biologist at the University of Hong Kong.
"Obviously they are claims that would need to be investigated. And I just worry that it's going to divert attention away from more pressing issues."
Originally posted by Hx3_1963
Glad to see SOMEONE's out there...today really reminds of the "The Omega Man"