| 41. | They say they have identified the bacterium in contaminated drinking water, which may therefore be the source of infection.
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| 42. | In most major outbreaks the source of infection has been water in the air-conditioning system of large public buildings.
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| 43. | Prostitutes see violent men as potential sources of infection, by HIV as well as other diseases such as hepatitis.
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| 44. | Given the timing of their illnesses, I guessed that all four patients must have had a common source of infection.
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| 45. | It can be replicating the virus and acting as a source of infection for animals that haven't been infected ."
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| 46. | In most major outbreaks the source of infection has been water in the air conditioning systems of large public buildings.
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| 47. | The group B streptococcus bacterium the most common source of infection in newborns, infecting about 1 of every 550 babies.
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| 48. | In most major outbreaks the source of infection has been water in the air conditioning system of large public buildings.
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| 49. | She had had sex without a condom once ( the source of infection ) and had a condom break once.
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| 50. | Natural bodies of water, especially those that are stagnant or polluted, are the most likely source of infection, Soper said.
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