350 Infants May Have Been Exposed to Tuberculosis at California Hospital

Officials say a maternity nurse at San Jose's Santa Clara Valley Medical Center was diagnosed with an active case of TB in November.
1:24 | 12/14/15

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Transcript for 350 Infants May Have Been Exposed to Tuberculosis at California Hospital
Marco Rubio. In northern California, health officials are scramling to track down hundreds of people who may have been exposed to tuberculosis. Reporter: This morning, fears that 1,000 people, including 350 infants, may have been exposed to tuberculosis. Infants have an immature immune system. If this were to happen to any one baby, that is one too many. Reporter: One of the nurses who worked in the maternity wing was diagnosed with an active case of the disease last month and placed on medical leave immediately. The hospital tracking down hundreds of parrots that could have been treated by the nurse. The hospital host posting a letter to the remember scythe. Officials say in September, the the results of the nurse's annual tb test came back negative. She was diagnosed with it in November when she was being evaluated. The individual roebl not able to spread it that well. Simply because the individual didn't have symptoms at all. Reporter: So far, no one else at the hospital has reported signs of the illness in. For "Gma" "Gma," aditi Roy, ABC news, San Jose, California.

This transcript has been automatically generated and may not be 100% accurate.

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