H5N1 Fatality in Hunan China Raises Vaccine Concerns
Recombinomics Commentary
October 27, 2005
"The death of a Chinese girl with flu-like symptoms in a village where a bird flu outbreak had been reported was caused by pneumonia acute respiratory difficulty, local health authority cited initial blood tests result as saying on Thursday.
Latest tests on the girl's blood sample have turned out negative for the avian influenza virus, and doctors said she had died of severe pneumonia with acute respiratory difficulty, according to the provincial center for disease prevention and control.
The 12-year-old He Yin died recently after eating a dead chicken in Wantang Village, in Xiangtan County of central China's Hunan Province, where the latest outbreak of H5N1 avian influenza was reported several days ago.
"The above description provides additional evidence that the cause of the girl's death was H5N1. On Tuesday, China filed an OIE report indicating that H5N1 had been detected at Wantang Village and was killing chickens and ducks. The death and/or bird flu symptoms in two children that had eaten a dead chicken in the village strongly suggests the severe pneumonia was due to H5N1. Negative data means little if there is no positive data identifying the micro-organism that caused the pneumonia.
"...In 2004, the only reported human H5n1 cases were in Vietnam and Thailand and isolates from the two countries were similar as were case fatality rates. However, in 2005 a milder version of H5N1 emerged in northern Vietnam, while a more lethal version was found in southern Vietnam and Cambodia. This there were two versions of H5N1 co-circulating in Vietnam.
"Similarly, the first human cases in Indonesia were reported in 2005 and there may be milder version there also. Some reports have described two distinct versions of H5N1 in Indonesia.
"This increase in versions of H5N1 raises serious questions about a pandemic vaccine effort that targets a 2004 version of H5N1 and ignores the emerging human versions that are linked to wild birds. The current strategy is to wait for a reassortment event, and there is little data to support such a prediction." Click the title to read the article.
| With the onset of a possible bird flu pandemic, read Diseases & Impaired Immunity to find out if your own immune system is already compromised. Read more to learn how you can help yourself while waiting for the right vaccine to come along. |
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