期刊
JOURNAL OF VIROLOGY
卷 83, 期 10, 页码 5278-5281出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.00063-09
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- ERATO (Japan Science and Technology Agency)
- Ministry of Education, Culture, Sports, Science, and Technology
- Ministry of Health, Labor, and Welfare of Japan
- National Institute of Allergy and Infectious Disease Public Health Service
Highly pathogenic H5N1 influenza viruses continue to cause concern, even though currently circulating strains are not efficiently transmitted among humans. For efficient transmission, amino acid changes in viral proteins may be required. Here, we examined the amino acids at positions 627 and 701 of the PB2 protein. A direct analysis of the viral RNAs of H5N1 viruses in patients revealed that these amino acids contribute to efficient virus propagation in the human upper respiratory tract. Viruses grown in culture or eggs did not always reflect those in patients. These results emphasize the importance of the direct analysis of original specimens.
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