Background: Tuberculosis (TB) can be prevented using isoniazid preventive therapy (IPT) among child contacts. However, the benefits of IPT depend on adherence to at least 6 months of daily treatment. A greater understanding of the barriers to and facilitators of adherence to IPT in resource-poor settings is required to optimise the benefits.
Methods: We prospectively evaluated adherence to IPT and its associated factors among child contacts (age 0-5 years) eligible for IPT. We undertook in-depth interviews with care givers and a focus group discussion with health care workers, which were thematically analysed to explore barriers to and facilitators of adherence from the perspective of both care givers and health workers.
Results: Of 99 eligible children, 49 (49.5%) did not complete 6 months of IPT. Children whose care giver collected their IPT medications from primary health centres were more likely to have incomplete adherence than those who collected them from hospitals (aOR 2.9, 95%CI 1.1-7.8). Thematic analyses revealed major barriers to and facilitators of adherence: regimen-related, care giver-related and health care-related factors, social support and access. Many of these factors are readily modifiable.
Conclusion: Providing information about IPT and improving accessibility for care givers to receive IPT at the primary health care facility should be priorities to facilitate implementation.