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Slide 091 |
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Before discussing various risk factors for the progression from infection to disease, you may wish to offer a solution to this question.
In the previously mentioned study among US Navy recruits, the men were also followed up and their tuberculosis morbidity was measured. Tuberculosis morbidity during follow-up varied greatly according to the size of the induration of the tuberculin skin test reaction to 5 TU PPD-S.
How do you explain these differences?