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Which of the following findings would lend support to the hygiene hypothesis?

A

Children who have a negative tuberculin skin test (no prior infection with mycobacterium tuberculosis) are less likely to develop asthma.

B

Children who are exposed to other kids in daycare are more likely to develop asthma.

C

Children who have been infected with hookworm are less likely to develop asthma.

D

Children with a history of Hepatitis A viral infection are more likely to develop asthma.

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