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  • Fit Chickens can carry bird flu

    'Fit chickens can carry bird flu'

    Yuli Tri Suwarni, The Jakarta Post, Bandung

    A healthy chicken could be a carrier of the bird flu virus although it shows no symptoms of the illness, a health official warned Wednesday.


    Head of the West Java Animal Husbandry Office, Rachmat Setiadi, said the warning was made following the discovery of healthy chickens that tested positive with H5N1 virus from a serology test conducted on 20 chickens around the house of two dead flu victims -- 23-year-old IJ and his 20-year-old brother -- in Kebonwaru area, Batunggal.

    He said earlier, only chickens and ducks are believed to carry the virus.
    "The test has shown that four healthy chickens were infected with H5N1. We should be more cautious," he said Wednesday in Bandung.

    Currently, people are only made aware of the danger of bird flu when chickens die suddenly in their neighborhood, but Rachmat said healthy chickens could also be carriers.

    Out of Bandung's 26 cities and regencies, only two -- Tasikmalaya city and Ciamis regency -- are free of H5N1 virus in poultry.

    He said cases where healthy chickens were infected with bird flu had occurred not only in Bandung, but also in other cities and regencies. However, he did not name the cities or regencies.

    He recommended that residents stop keeping chickens in their backyards or near their houses.

    Meanwhile, serology tests on 11 dogs kept by the family of the bird flu cluster in Kebonwaru have came back negative, according to head of Bandung City Agriculture Office, Yogi Supardjo.

    He said the result showed that dogs could not spread the virus.
    He said his office was currently working on a public campaign in 26 districts to make people aware of the threat of bird flu following the deaths of IJ and TJ.


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    "The next major advancement in the health of American people will be determined by what the individual is willing to do for himself"-- John Knowles, Former President of the Rockefeller Foundation

  • #2
    Healthy chickens can carry bird flu: Indonesian official

    Healthy chickens can carry bird flu: Indonesian official

    An Indonesian official has warned that a healthy chicken could be a carrier of the bird flu virus although it shows no symptoms of the illness, following a finding in West Java province, a report said Thursday.

    Head of the West Java Animal Husbandry Office Rachmat Setiadi said the warning was made following the discovery of healthy chickens that tested positive with H5N1 virus from a serology test.

    The test involved 20 chickens around the house of two dead bird flu victims in Batunggal, reported the major national newspaper The Jakarta Post.

    Rachmat said only chickens and ducks are believed to carry the virus.

    "The test has shown that four healthy chickens were infected with H5N1. We should be more cautious," he said Wednesday in the provincial capital of Bandung , some 150 km south of Jakarta .

    Currently, people are only made aware of the danger of bird flu when chickens die suddenly in their neighborhood, but Rachmat said healthy chickens could also be carriers.

    He said cases where healthy chickens were infected with bird flu had occurred not only in Bandung , but also in other cities and regencies. However, he did not name the cities or regencies.

    He recommended that residents stop keeping chickens in their backyards or near their houses.

    Source: Xinhua http://english.peopledaily.com.cn/2...005_309276.html



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    • #3
      Re: Healthy chickens can carry bird flu: Indonesian official

      same story, but a slightly longer version posted at http://www.flutrackers.com/forum/showthread.php?t=11288

      .
      "The next major advancement in the health of American people will be determined by what the individual is willing to do for himself"-- John Knowles, Former President of the Rockefeller Foundation

      Comment


      • #4
        Re: Fit Chickens can carry bird flu

        Commentary at

        Comment


        • #5
          Re: Healthy chickens can carry bird flu: Indonesian official

          "Healthy chickens can carry bird flu: Indonesian official"

          Vaccination??

          Comment


          • #6
            Re: Healthy chickens can carry bird flu: Indonesian official

            Originally posted by Dutchy
            "Healthy chickens can carry bird flu: Indonesian official"

            Vaccination??
            Vaccinations are with H5N2 or H5 serotypes other than H5N1 (so vaccinated birds can be distinguished from H5N1 infected birds).

            The media reported that the birds were positive for H5N1 antibodies.

            Comment


            • #7
              Re: Healthy chickens can carry bird flu: Indonesian official

              Do we know if these birds were vaccinated or not though? Vaccination may not have provided immunity from infection, but could have made them into asymptomatic carriers, as I believe has been seen before?

              Comment


              • #8
                Re: Fit Chickens can carry bird flu

                If these birds were vaccinated with an H5 VAX (not necessarily H5N1), couldn't they still catch H5N1 and develop antibodies?

                .
                "The next major advancement in the health of American people will be determined by what the individual is willing to do for himself"-- John Knowles, Former President of the Rockefeller Foundation

                Comment


                • #9
                  Re: Fit Chickens can carry bird flu

                  Originally posted by AlaskaDenise
                  If these birds were vaccinated with an H5 VAX (not necessarily H5N1), couldn't they still catch H5N1 and develop antibodies?

                  .
                  The birds should have been tested for N1 and N2 antibodies.

                  I would assume that these were not vaccinated birds.

                  Comment


                  • #10
                    Re: Healthy chickens can carry bird flu: Indonesian official

                    Originally posted by Vibrant62
                    Do we know if these birds were vaccinated or not though? Vaccination may not have provided immunity from infection, but could have made them into asymptomatic carriers, as I believe has been seen before?
                    I would assume that the birds were N2 negative.

                    Comment


                    • #11
                      Re: Fit Chickens can carry bird flu

                      from http://www.recombinomics.com/News/04..._Chickens.html

                      Similarly, infection in asymptomatic chickens offers more targets for recombination. The H5N1 human cases in the south appear to be much more severe than in the north. Asymptomatic chickens offer yet another host for further recombination between these co-circulating strains. A recent survey of poultry in the 11 provinces in the Mekong Delta indicated 71% of the ducks, and 21% of the chickens were H5N1 positive.


                      Does this involve any of the "passaging" process that Sharpe referred to, i.e., allowing the virus to become more mammalian-adapted? (not sure how that could happen in a bird, though)

                      .
                      Last edited by Niko; June 14, 2007, 09:16 PM.
                      "The next major advancement in the health of American people will be determined by what the individual is willing to do for himself"-- John Knowles, Former President of the Rockefeller Foundation

                      Comment


                      • #12
                        Re: Fit Chickens can carry bird flu



                        <big><big>Commentary</big></big>

                        Asymptomatic H5N1 Infected Chickens in Indonesia
                        Recombinomics Commentary
                        October 5, 2006

                        Head of the West Java Animal Husbandry Office, Rachmat Setiadi, said the warning was made following the discovery of healthy chickens that tested positive with H5N1 virus from a serology test conducted on 20 chickens around the house of two dead flu victims -- 23-year-old IJ and his 20-year-old brother -- in Kebonwaru area, Batunggal

                        The above comments indicate asymptomatic chickens can carry H5N1 bird flu. Although many H5N1 sequences from birds and people in Indonesia have been published, the link between H5N1 in dead poultry, and H5N1 in dead patients has not been established.

                        All reported sequences from human cases in 2006 on the island of Java have has a novel HA cleavage site. The novel cleavage site has only been detected in one duck on Java in Indramayu, and that sequence was similar to a few human sequences from late 2005 / early 2006 (in upper twig of lower branch of HA tree). The vast majority of human cases are on a separate twig of the lower branch, and these do not match any reported poultry isolates on Java. Matching sequences have been found in two chickens in central Sumatra, isolated in 2005.

                        The H5N1 asymptomatic chickens on Java are positive for antibodies. It is not clear if H5N1 sequences have been detected in the asymptomatic birds. These infections could represent a separate reservoir. There have also been repots on the recovery of suspect bird flu victims. However, these patients have been H5N1 negative, so it remains unclear if they are infected with H5N1, or if the H5N1 sequence from these recovered is different than the H5N1 fatal cases. Almost all H5N1 human sequences in Indonesia are from fatal cases.

                        Asymptomatic chickens in Vietnam have also been reported previously.

                        Clearly more surveillance and sequences from H5N1 infected people, birds, and other mammals are indicated.

                        Comment


                        • #13
                          Re: Fit Chickens can carry bird flu

                          Actually, it makes sense that strains of chickens are becoming resistant to H5N1. It doesn't kill 100% of the chickens, and they don't cull, so the ones that aren't killed go on with their lives. This is exactly what you would expect if you did nothing. Of course, if you extend that thinking to people, you have New York City's pandemic plan. Natural selection works, it's just a little harsh.

                          Comment


                          • #14
                            Re: Healthy chickens can carry bird flu: Indonesian official

                            Originally posted by Vibrant62
                            Do we know if these birds were vaccinated or not though? Vaccination may not have provided immunity from infection, but could have made them into asymptomatic carriers, as I believe has been seen before?
                            They have been vaccinating chickens in the greater Bandung area. No way to know if these birds were vaccinated, though. I don't recall seeing any comments about that happening (or not) in the press reports.
                            ...when you have eliminated the impossible, whatever remains, however improbable, must be the truth. - Sherlock Holmes

                            Comment


                            • #15
                              Re: Healthy chickens can carry bird flu: Indonesian official

                              Originally posted by Theresa42
                              They have been vaccinating chickens in the greater Bandung area. No way to know if these birds were vaccinated, though. I don't recall seeing any comments about that happening (or not) in the press reports.
                              Vaccination is with H5Nx. x is NOT 1.

                              I seriosly doubt that the asymptomatic H5N1 positive birds were vaccinated.

                              Comment

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