Table 9.3.

Positive tuberculin test reaction results in infants, children, and adolescents

Induration of 5 mm or more	Induration 10 mm or more	Induration more than 15 mm
Children in close contact with known or suspected contagious people with tuberculosis	Children < 4 years of age	Children 4 years of age or older without any risk
Children with suspected tuberculosis either clinically or on chest radiograph	Children with other medical conditions, including Hodgkin disease, lymphoma, diabetes, renal failure, malnutrition
Children receiving immunosuppressive therapy or with immunosuppressive conditions, including HIV	Children born in, or who travel to, high-prevalence countries
	Children exposed to adults in high-risk categories