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Virus undergoes mutation of the H1N1 human influenza A ?

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  • Virus undergoes mutation of the H1N1 human influenza A ?

    [Google Translation]

    Virus undergoes mutation of the H1N1 human influenza A

    Rapid tests were negative, and no laboratory tests of samples of bronchial content

    * The screening a patient with symptoms of the disease were negative, but those made to the content and bronchial lung biopsy after death, gave positive

    Francisco Rom?n Guti?rrez / MetroNoticias

    Nuevo Laredo, Tamaulipas .- Although the federal Department of Health has announced that influenza A/H1N1 virus has [ed:not] undergone changes in recent days, in Nuevo Laredo the person who died for this cause is one example.

    Rapid tests for detection of the disease were performed in life, were negative, and no laboratory tests of samples containing bronchial lung biopsy and pharyngeal exudate, which was taken after his death.

    This situation is worrying, the doctor said Luis Loa Campbell, head of the Sanitary Jurisdiction number V to be interviewed about the death of the driver of the tractor, on May 11 in the Social Security hospital.

    He said that this person arrived on May 8 from the capital to Nuevo Laredo with a picture of pneumonia advanced symptomatic despite medical treatment administered to the urgency of the case, died.

    "In this case we can point out is that in life he made rapid tests for detection of influenza virus, but they were negative, two days during the procedures were followed and were again negative," he explained.

    "The worrying situation," he added, "is that when a new analysis of samples of lung tissue, bronchial contents performed at the Institute of Epidemiological Diagnosis and Reference, were positive for influenza A/H1N1," he said.

    In conclusion, he said that this put on alert again for the Health Sector in the state and especially to the border of the possible mutation of the influenza A/H1N1 virus.

  • #2
    Re: Virus undergoes mutation of the H1N1 human influenza A ?

    Originally posted by FrenchieGirl View Post
    [I] "In this case we can point out is that in life he made rapid tests for detection of influenza virus, but they were negative, two days during the procedures were followed and were again negative," he explained.

    "The worrying situation," he added, "is that when a new analysis of samples of lung tissue, bronchial contents performed at the Institute of Epidemiological Diagnosis and Reference, were positive for influenza A/H1N1," he said.
    Does that really suggest a mutation? Or only that the nasal swab doesn't provide an accurate result in every case, which we already knew.

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    • #3
      Re: Virus undergoes mutation of the H1N1 human influenza A ?

      Good question, LizW. And, that was my first thought as a non-clinician. But, the person quoted is a physician (me thinks) and would know of the 'false negatives' that a rapid test can produce.

      Perhaps, the negatives were negative because they are trying to detect the virus in the nasal cavity, when in reality the infection was deep in the lungs?

      We have seen that before???

      But, even if, that doesn't require a mutation...does it?

      Just thinking out-loud.

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      • #4
        Re: Virus undergoes mutation of the H1N1 human influenza A ?

        They did a rapid test! We know is false negative in 20% of the cases.....


        WTB

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        • #5
          Re: Virus undergoes mutation of the H1N1 human influenza A ?

          Originally posted by supernova1987a View Post
          according to the interim report on kobe?s cases released by idsc, only 53.5% of the rapid tests or 23 cases were positive and remaining 46.5% or 20 cases were false negative. Rapid tests cannot be reliable unless and until a patient releases enough quantity of viruses.
          If so, a rapid test for novel flu will be good only for the 53.5% of the confirmed cases. Pcr tests will be necessary anyway for the remaining suspected patients (43.5% of later confirmed cases plus ultimately negative but suspected cases).
          A
          sn1987a

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