Epidemiology of childhood tuberculosis and factors associated with unsuccessful treatment outcomes in Tigray, Ethiopia: a ten-year retrospective cross sectional study

BACKGROUND

Childhood TB is an indicator of a recent transmission of the disease in a community and it is estimated to constitute 15-20% of all TB cases in many of developing countries. However, only few studies which dominated by industrial countries were engaged to assess the situation. Therefore, this study was aimed to see epidemiology of childhood TB and factors associated with poor treatment outcome in developing country.

METHOD

Using retrospective cross-sectional study design; Socio-demographic and clinical data of children aged less than 15 years old, treated for all forms of TB in the past 10 years (2007-2016) was collected from randomly selected eight public hospitals of Tigray. Then, Univariate logistic regression and adjusted multivariate logistic regressions was done to identify variables which had association with unsuccessful treatment outcomes at P-value less than 0.05.

RESULT

In the past 10 years, a total of 13,345 Tuberculosis cases were observed. Of these, 1086 (8.1%) cases were children aged less than 15 years old. Sixty seven (6.2%) cases were smear positive. Among those that tested for HIV, 69 (8.3%) cases were TB/HIV co-infected. Of those with treatment outcome record 746 (88.7%) were successfully treated. Factors like being female (AOR, 1.79; 95% CI, 1.07-3.00), Age 0-5 years (AOR, 3.35; 95% CI, 2.11-5.33), Unknown HIV status (AOR, 2.44; 95% CI, 1.51-3.95) and pulmonary positive case (AOR, 2.56; 95% CI, 1.13-5.77), were more likely to have unsuccessful treatment outcome than their counterparts.

CONCLUSION

In Tigray 8.1% all TB cases were children age less than 15 years old. Childhood TB treatment outcome varied with sex, age and HIV status.

Adherence to Childhood Tuberculosis Treatment in Mozambique

BACKGROUND

There is limited literature regarding adherence rates for the treatment of tuberculosis (TB) in children. We aimed to describe TB treatment outcomes and adherence as well as to evaluate associated factors to poor adherence in Mozambican children.

METHODS

This is a sub-study of a community TB incidence study among children <3 years of age. Incomplete adherence included the sum of lost-to-follow-up cases plus those with a delay of > 3 weeks to treatment completion.

RESULTS

Fifty TB treatments were assessed. Forty-four (88.0%) patients completed treatment, two (4.0%) died during treatment and four (8.0%) were lost to follow-up. Incomplete adherence was observed in 31.3% (15 of 48) of cases and was associated with malnutrition or history of a migrant mother.

CONCLUSION

Although treatment outcome is overall good, there is still a significant proportion of incomplete adherence. Further larger paediatric TB cohorts and qualitative approaches are needed to assess and confirm potential factors for non-adherence.

Childhood Tuberculosis in a Sub-Saharan Tertiary Facility: Epidemiology and Factors Associated with Treatment Outcome

Childhood tuberculosis (TB) is a diagnostic challenge in developing countries, and patient outcome can be influenced by certain factors. We report the disease course, clinical profile and factors associated with treatment outcome in a tertiary facility of Kinshasa. Documentary and analytical studies were conducted using clinical and exploratory data for children aged up to 15 years who were admitted to the University Clinics of Kinshasa for TB. Data are presented as frequencies and averages, and binary and logistic regression analyses were performed. Of 283 children with TB, 82 (29.0%) had smear-negative TB, 40 (14.1%) had smear-positive TB, 159 (56.1%) had extra-pulmonary TB (EPTB), 2 (0.7%) had multidrug-resistant TB (MDR-TB), 167 (59.0%) completed treatment, 30 (10.6%) were cured, 7 (2.5%) failed treatment, 4 (1.4%) died, 55 (19.4%) were transferred to health centers nearest their home, and 20 (7.0%) were defaulters. In the binary analysis, reported TB contacts (p = 0.048), type of TB (p = 0.000), HIV status (p = 0.050), Ziehl-Nielsen test result (p = 0.000), Lowenstein culture (p = 0.004) and chest X-ray (p = 0.057) were associated with outcome. In the logistic regression, none of these factors was a significant predictor of outcome. Tertiary level care facilities must improve the diagnosis and care of patients with childhood TB, which justifies the development of alternative diagnostic techniques and the assessment of other factors that potentially affect outcome.