| 21. | After the release of new influenza virus, the host cell dies.
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| 22. | Children have been shown to spread the influenza virus well within a community,
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| 23. | Dozens of influenza viruses were identified, said Florin Popovici, a senior health official.
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| 24. | Pigs, which are genetically similar to people, often carry the human influenza virus.
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| 25. | But it has no effect on other families of viruses, including influenza virus.
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| 26. | The mother had an influenza virus infection but has since recovered.
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| 27. | The influenza virus at the core of Dolisos'remedy has been diluted nine times.
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| 28. | Both the H2N2 and H3N2 pandemic strains contained genes from avian influenza viruses.
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| 29. | Influenza viruses are members of the family " Orthomyxoviridae ".
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| 30. | It takes about two weeks to develop resistance to influenza virus after being vaccinated.
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