Chapter 4: childhood contact screening and management

Area of Science:

• Public Health
• Infectious Diseases
• Pediatrics

Background:

• Young children in close contact with smear-positive pulmonary tuberculosis (PTB) face high risks of Mycobacterium tuberculosis infection and disease.
• Household contact screening is essential for early detection and treatment of TB in children and for initiating preventive therapy.

Purpose of the Study:

• To outline recommended screening and treatment protocols for child contacts of smear-positive PTB cases.
• To emphasize the importance of isoniazid preventive treatment (IPT) for infected and non-infected children, particularly those with HIV.
• To provide guidance on managing contacts of multidrug-resistant TB (MDR-TB) patients.

Main Methods:

• Review of current evidence and World Health Organization (WHO) recommendations for TB contact management in children.
• Emphasis on collaborative efforts between National TB Programmes (NTPs) and child health providers for comprehensive screening.
• Clinical follow-up recommendations for contacts of MDR-TB patients.

Main Results:

• Isoniazid preventive treatment (IPT) is highly beneficial for child contacts, especially those with HIV.
• Breastfeeding infants of mothers with smear-positive PTB should receive 6 months of IPT followed by BCG vaccination, with safe continuation of breastfeeding.
• Close contacts of MDR-TB patients require at least 2 years of clinical follow-up, with prompt treatment if active disease develops.

Conclusions:

• Comprehensive screening and timely intervention are critical for preventing TB disease in child contacts.
• WHO does not currently recommend second-line drugs for chemoprophylaxis in MDR-TB contacts based on available evidence.
• Integrated TB and child health services are necessary for effective management of pediatric TB contacts.