It is the first indication that a worker at the huge research complex has been exposed to the bacteria, which can cause potentially fatal disease. Tests of other employees have been negative. McDonald said ongoing tests also identified an additional monkey that has antibodies to the bacteria, bringing to eight the number of monkeys that tests indicate have been exposed or sickened at the complex.
None of the exposed monkeys was being used in experiments and they never should have come into contact with the bacteria, which is tightly regulated as a research material because of its potential for use in a bioweapon.
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