| 1. | The route of infection is usually, but not necessarily, by a bite.
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| 2. | The route of infection is usually, but not always, by a bite.
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| 3. | Oral transmission is an unusual route of infection, but has been described.
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| 4. | At the same time, it is important to trace the route of infection.
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| 5. | To stop its spread, we must first thoroughly clarify the route of infection.
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| 6. | And somehow this new route of infection signals a sea change.
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| 7. | Birds are thought to be a route of infection between farms within one region.
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| 8. | The main route of infection is inhalation of airborne spores through the respiratory pathway.
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| 9. | This raised the possibility of a third major route of infection, beyond congenital and carnivorous transmission.
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| 10. | The problem isn't contaminated syringe needles, the usual route of infection when illegal drugs are involved.
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