Antibiotic Use for Sepsis in Hospitalized Neonates in Botswana: Factors Associated with Guideline-Divergent Prescribing

In low- and middle-income countries, where antimicrobial access may be erratic and neonatal sepsis pathogens are frequently multidrug-resistant, empiric antibiotic prescribing practices may diverge from the World Health Organization (WHO) guidelines. This study examined antibiotic prescribing for neonatal sepsis at a tertiary referral hospital neonatal unit in Gaborone, Botswana, using data from a prospective cohort of 467 neonates. We reviewed antibiotic prescriptions for the first episode of suspected sepsis, categorized as early-onset (EOS, days 0-3) or late-onset (LOS, >3 days). The WHO prescribing guidelines were used to determine whether antibiotics were "guideline-synchronous" or "guideline-divergent". Logistic regression models examined independent associations between the time of neonatal sepsis onset and estimated gestational age (EGA) with guideline-divergent antibiotic use. The majority (325/470, 69%) were prescribed one or more antibiotics, and 31 (10%) received guideline-divergent antibiotics. Risk factors for guideline-divergent prescribing included neonates with LOS, compared to EOS (aOR [95% CI]: 4.89 (1.81, 12.57)). Prematurity was a risk factor for guideline-divergent prescribing. Every 1-week decrease in EGA resulted in 11% increased odds of guideline-divergent antibiotics (OR [95% CI]: 0.89 (0.81, 0.97)). Premature infants with LOS had higher odds of guideline-divergent prescribing. Studies are needed to define the causes of this differential rate of guideline-divergent prescribing to guide future interventions.

Genomic Analysis of Group B Streptococcus Carriage Isolates From Botswana Reveals Distinct Local Epidemiology and Identifies Novel Strains

In pregnant people colonized with group B Streptococcus (GBS) in Botswana, we report the presence/expansion of sequence types 223 and 109, a low rate of erythromycin resistance, and 3 novel sequence types. These data highlight the importance of local epidemiologic studies of GBS, a significant source of neonatal disease.

Severity of illness and mortality among children admitted to a tertiary referral hospital in Botswana: A secondary data analysis of a prospective cohort study

Objectives

Data on triage practices of children admitted to Princess Marina Hospital in Gaborone, Botswana is limited. The inpatient triage, assessment, and treatment score was developed for low resource settings to predict mortality in children. We assess its performance among children admitted to Princess Marina Hospital and their demographic, clinical, and risk factors for death.

Methods

This was a secondary data analysis of a prospective cohort study comprising 299 children ages 1 month to 13 years admitted June to September 2018. Descriptive statistics, bivariate analysis, and multivariate logistic regression were used. Sensitivity and specificity data were generated for the inpatient triage, assessment, and treatment score.

Results

Thirteen children died (13/284, 4.6%). Comorbidity (adjusted odds ratio 4.0, p = 0.020) and high inpatient triage, assessment, and treatment score (adjusted odds ratio 5.0, p = 0.017) increased odds of death. The area under the receiver operating characteristic curve was 0.81. Using inpatient triage, assessment, and treatment cutoff of 4, the sensitivity, specificity, and likelihood ratio were 31%, 94%, and 5.0, respectively.

Conclusion

Implementing the inpatient triage, assessment, and treatment score in low resource settings may improve identification, treatment, and evaluation of the sickest children.

Risk factors for mortality in a hospitalised neonatal cohort in Botswana

OBJECTIVES

A disproportionate number of neonatal deaths occur in low/middle-income countries, with sepsis a leading contributor of mortality. In this study, we investigate risk factors for mortality in a cohort of high-risk hospitalised neonates in Botswana. Independent predictors for mortality for infants experiencing either a sepsis or a non-sepsis-related death are described.

METHODS

This is a prospective observational cohort study with infants enrolled from July to October 2018 at the neonatal unit (NNU) of Princess Marina Hospital (PMH) in Gaborone, Botswana. Data on demographic, clinical and unit-specific variables were obtained. Neonates were followed to death or discharge, including transfer to another hospital. Death was determined to be infectious versus non-infectious based on primary diagnosis listed on day of death by lead clinician on duty.

RESULTS

Our full cohort consisted of 229 patients. The overall death rate was 227 per 1000 live births, with cumulative proportion of deaths of 22.7% (n=47). Univariate analysis revealed that sepsis, extremely low birth weight (ELBW) status, hypoxic ischaemic encephalopathy, critical illness and infants born at home were associated with an increased risk of all-cause mortality. Our multivariate model revealed that critical illness (HR 3.07, 95% CI 1.56 to 6.03) and being born at home (HR 4.82, 95% CI 1.76 to 13.19) were independently associated with all-cause mortality. Low birth weight status was independently associated with a decreased risk of mortality (HR 0.24, 95% CI 0.11 to 0.53). There was a high burden of infection in the cohort with more than half of infants (140, 61.14%) diagnosed with sepsis at least once during their NNU admission. Approximately 20% (n=25) of infants with sepsis died before discharge. Our univariate subanalysis of the sepsis cohort revealed that ELBW and critical illness were associated with an increased risk of death. These findings persisted in the multivariate model with HR 3.60 (95% CI 1.11 to 11.71) and HR 2.39 (95% CI 1 to 5.77), respectively.

CONCLUSIONS

High rates of neonatal mortality were noted. Urgent interventions are needed to improve survival rates at PMH NNU and to prioritise care for critically ill infants at time of NNU admission, particularly those born at home and/or of ELBW.

A pilot pragmatic trial of a "what matters most"-based intervention targeting intersectional stigma related to being pregnant and living with HIV in Botswana

We conducted a pilot trial of an intervention targeting intersectional stigma related to being pregnant and living with HIV while promoting capabilities for achieving 'respected motherhood' ('what matters most') in Botswana. A pragmatic design allocated participants to the intervention (N = 44) group and the treatment-as-usual (N = 15) group. An intent-to-treat, difference-in-difference analysis found the intervention group had significant decreases in HIV stigma (d = - 1.20; 95% CI - 1.99, - 0.39) and depressive symptoms (d = - 1.96; 95% CI - 2.89, - 1.02) from baseline to 4-months postpartum. Some, albeit less pronounced, changes in intersectional stigma were observed, suggesting the importance of structural-level intervention components to reduce intersectional stigma.

Assessing antibiotic utilization among pediatric patients in Gaborone, Botswana

Objectives

Over the past decade, concerning trends in antimicrobial resistance have emerged in Southern Africa. Given a paucity of pediatric data, our objectives were to (1) describe antibiotic utilization trends at a national referral center in Southern Africa and (2) assess the proportion of patients receiving antibiotics appropriately. In addition, risk factors for inappropriate use were explored.

Methods

We performed a prospective cohort study on medical and surgical pediatric patients aged below 13 years admitted to the country's tertiary care referral hospital in Gaborone, Botswana. We collected demographics, clinical, laboratory, and microbiology details, in addition to information on antibiotic use. We separately categorized antibiotic prescriptions using the World Health Organization AWaRe Classification of Access, Watch, and Restrict.

Results

Our final cohort of 299 patients was 44% female and 27% HIV-exposed; most (68%) were admitted to the General Pediatrics ward. Infections were a common cause of hospitalization in 29% of the cohort. Almost half of our cohort were prescribed at least one antibiotic during their stay, including 40% on admission; almost half (47%) of these prescriptions were deemed appropriate. At the time of discharge, 52 (21%) patients were prescribed an antibiotic, of which 37% were appropriate. Of all antibiotics prescribed, 42% were from the World Health Organization Access antibiotic list, 58% were from the Watch antibiotic list, and 0% were prescribed antibiotics from the Restrict antibiotic list. Univariate analyses revealed that surgical patients were significantly more likely to have inappropriate antibiotics prescribed on admission. Patients who were treated for diseases for which there was a clinical pathway, or who had blood cultures sent at the time of admission were less likely to have inappropriate antibiotics prescribed. On multivariate analysis, apart from admission to the surgical unit, there were no independent predictors for inappropriate antibiotic use, although there was a trend for critically ill patients to receive inappropriate antibiotics.

Conclusion

Our study reveals high rates of antibiotic consumption, much of which was inappropriate. Promising areas for antimicrobial stewardship interventions include (1) standardization of management approaches in the pediatric surgical population and (2) the implementation of feasible and generalizable clinical pathways in this tertiary care facility.

Optimising the management of childhood acute diarrhoeal disease using a rapid test-and- treat strategy and/or Lactobacillus reuteri DSM 17938: a multicentre, randomised, controlled, factorial trial in Botswana

INTRODUCTION

The study aim was to determine if rapid enteric diagnostics followed by the provision of targeted antibiotic therapy ('test-and-treat') and/or Lactobacillus reuteri DSM 17938 would improve outcomes in children hospitalised in Botswana with acute gastroenteritis.

METHODS

This was a multicentre, randomised, factorial, controlled, trial. Children aged 2-60 months admitted for acute non-bloody diarrhoea to four hospitals in southern Botswana were eligible. Participants were assigned to treatment groups by web-based block randomisation. Test-and-treat results were not blinded, but participants and research staff were blinded to L. reuteri/placebo assignment; this was dosed as 1×10⁸ cfu/mL by mouth daily and continued for 60 days. The primary outcome was 60-day age-standardised height (HAZ) adjusted for baseline HAZ. All analyses were by intention to treat. The trial was registered at Clinicaltrials.gov.

RESULTS

Recruitment began on 12 June 2016 and continued until 24 October 2018. There were 66 participants randomised to the test-and-treat plus L. reuteri group, 68 randomised to the test-and-treat plus placebo group, 69 to the standard care plus L. reuteri group and 69 to the standard care plus placebo group. There was no demonstrable impact of the test-and-treat intervention (mean increase of 0.01 SD, 95% CI -0.14 to 0.16 SD) or the L. reuteri intervention (mean decrease of 0.07 SD, 95% CI -0.22 to 0.08 SD) on adjusted HAZ at 60 days.

CONCLUSIONS

In children hospitalised for acute gastroenteritis in Botswana, neither a test-and-treat algorithm targeting enteropathogens, nor a 60-day course of L. reuteri DSM 17938, were found to markedly impact linear growth or other important outcomes. We cannot exclude the possibility that test-and-treat will improve the care of children with significant enteropathogens (such as Shigella) in their stool.

TRIAL REGISTRATION NUMBER

NCT02803827.

Keeping It Real: Antibiotic Use Problems and Stewardship Solutions in Low- and Middle-income Countries

Antimicrobial resistance is a global health threat and there is an urgent need to manage antibiotic use to slow its development. However, antimicrobial stewardship interventions in low- and middle-income countries (LMIC) have been limited in terms of their resourcing, feasibility and effectiveness in the face of greater challenges in child mortality. We sought to gather together examples of antibiotic use problems faced by clinicians in LMIC, many of which are unique to these settings, and real-world antimicrobial stewardship solutions identified, with the goal of learning broader lessons that might be applicable across LMIC.

Non-diphtheriae Corynebacterium species are associated with decreased risk of pneumococcal colonization during infancy

Streptococcus pneumoniae (pneumococcus) is a leading cause of severe infections among children and adults. Interactions between commensal microbes in the upper respiratory tract and S. pneumoniae are poorly described. In this study, we sought to identify interspecies interactions that modify the risk of S. pneumoniae colonization during infancy and to describe development of the upper respiratory microbiome during infancy in a sub-Saharan African setting. We collected nasopharyngeal swabs monthly (0-6 months of age) or bimonthly (6-12 months of age) from 179 mother-infant dyads in Botswana. We used 16S ribosomal RNA gene sequencing to characterize the nasopharyngeal microbiome and identified S. pneumoniae colonization using a species-specific PCR assay. We detect S. pneumoniae colonization in 144 (80%) infants at a median age of 71 days and identify a strong negative association between the relative abundance of the bacterial genera Corynebacterium within the infant nasopharyngeal microbiome and the risk of S. pneumoniae colonization. Using in vitro cultivation experiments, we demonstrate growth inhibition of S. pneumoniae by secreted factors from strains of several Corynebacterium species isolated from these infants. Finally, we demonstrate that antibiotic exposures and the winter season are associated with a decline in the relative abundance of Corynebacterium within the nasopharyngeal microbiome, while breastfeeding is associated with an increase in the Corynebacterium relative abundance. Our findings provide novel insights into the interspecies interactions that contribute to colonization resistance to S. pneumoniae and suggest that the nasopharyngeal microbiome may be a previously unrecognized mechanism by which environmental factors influence the risk of pneumococcal infections during childhood. Moreover, this work lays the foundation for future studies seeking to use targeted manipulation of the nasopharyngeal microbiome to prevent infections caused by S. pneumoniae.

Evolution of pneumococcal serotype epidemiology in Botswana following introduction of 13-valent pneumococcal conjugate vaccine

Pneumococcal conjugate vaccines reduce the burden of invasive pneumococcal disease, but the sustained effect of these vaccines can be diminished by an increase in disease caused by non-vaccine serotypes. To describe pneumococcal serotype epidemiology in Botswana following introduction of 13-valent pneumococcal conjugate vaccine (PCV-13) in July 2012, we performed molecular serotyping of 268 pneumococcal strains isolated from 221 children between 2012 and 2017. The median (interquartile range) age of the children included in this analysis was 6 (3,12) months. Fifty-nine percent of the children had received at least one dose of PCV-13 and 35% were fully vaccinated with PCV-13. While colonization by vaccine serotypes steadily declined following PCV-13 introduction, 25% of strains isolated more than 3 years after vaccine introduction were PCV-13 serotypes. We also observed an increase in colonization by non-vaccine serotypes 21 and 23B, which have been associated with invasive pneumococcal disease and antibiotic resistance in other settings.

Characterizing the bioburden of ESBL-producing organisms in a neonatal unit using chromogenic culture media: a feasible and efficient environmental sampling method

INTRODUCTION

Infections due to extended spectrum beta-lactamase producing organisms (ESBL) have emerged as the leading cause of sepsis among hospitalized neonates in Botswana and much of sub-Saharan Africa and south Asia. Yet, ESBL reservoirs and transmission dynamics within the neonatal intensive care unit (NICU) environment are not well-understood. This study aimed to assess the efficiency and feasibility of a chromogenic-culture-media-based environmental sampling approach to characterize the ESBL bioburden within a NICU.

METHODS

A series of four point-prevalence surveys were conducted at a 36-bed NICU at a public tertiary referral hospital in Botswana from January-June 2021. Samples were collected on 4 occasions under semi-sterile technique using 1) flocked swabs & templates (flat surfaces); 2) sterile syringe & tubing (water aspiration); and 3) structured swabbing techniques (hands & equipment). Swabs were transported in physiological saline-containing tubes, vortexed, and 10 µL was inoculated onto chromogenic-agar that was selective and differential for ESBL (CHROMagar™ ESBL, Paris, France), and streaking plates to isolate individual colonies. Bacterial colonies were quantified and phenotypically characterized using biochemical identification tests.

RESULTS

In total, 567 samples were collected, 248 (44%) of which grew ESBL. Dense and consistent ESBL contamination was detected in and around sinks and certain high-touch surfaces, while transient contamination was demonstrated on medical equipment, caregivers/healthcare worker hands, insects, and feeding stations (including formula powder). Results were available within 24-72 h of collection. To collect, plate, and analyse 50 samples, we estimated a total expenditure of $269.40 USD for materials and 13.5 cumulative work hours among all personnel.

CONCLUSIONS

Using basic environmental sampling and laboratory techniques aided by chromogenic culture media, we identified ESBL reservoirs (sinks) and plausible transmission vehicles (medical equipment, infant formula, hands of caregivers/healthcare workers, & insects) in this NICU environment. This strategy was a simple and cost-efficient method to assess ESBL bioburden and may be feasible for use in other settings to support ongoing infection control assessments and outbreak investigations.

Theory-Driven, Multi-Stage Process to Develop a Culturally-Informed Anti-Stigma Intervention for Pregnant Women Living with HIV in Botswana

BACKGROUND AND OBJECTIVES

Despite a well-established universal HIV diagnosis and treatment program, Botswana continues to face a high HIV prevalence, in large part due to persistent stigma, which particularly affects pregnant women and interferes with healthcare engagement. Tackling stigma as a fundamental cause of HIV disparities is an important but understudied aspect of current HIV interventions. Our multinational and multicultural team used a theory-driven, multi-stage iterative process to develop measures and interventions to first identify and then target the most culturally-salient aspects of stigma for mothers living with HIV in Botswana. This methodology report examines the stage-by-stage application of the "What Matters Most" (WMM) theory and lessons learned, sharing a replicable template for developing culturally-shaped anti-stigma interventions.

METHODS

First, we conducted initial qualitative work based on the WMM theory to identify key structural and cultural factors shaping stigma for women living with HIV in Botswana. Second, we developed a psychometrically validated scale measuring how "what matters most" contributes to and protects against stigma for this population. Third, we designed an anti-stigma intervention, "Mothers Moving towards Empowerment" (MME), centered on the local values identified using WMM theory that underly empowerment and motherhood by adapting a cognitive behavioral therapy (CBT)-informed, group-based, and peer-co-led anti-stigma intervention specifically for pregnant women living with HIV. Fourth, we conducted a pilot study of MME in which participants were allocated to two trial arms: intervention or treatment-as-usual control.

RESULTS

Our qualitative research identified that bearing and caring for children are capabilities essential to the concept of respected womanhood, which can be threatened by a real or perceived HIV diagnosis. These values informed the development and validation of a scale to measure these culturally-salient aspects of stigma for women living with HIV in Botswana. These findings further informed our intervention adaptation and pilot evaluation, in which the intervention group showed significant decreases in HIV stigma and depressive symptoms compared to the control group. Participants reported overcoming reluctance to disclose their HIV status to family, leading to improved social support.

CONCLUSION AND GLOBAL HEALTH IMPLICATIONS

Previous studies have not utilized culturally-based approaches to assess, resist, and intervene with HIV-related stigma. By applying WMM in each stage, we identified cultural and gendered differences that enabled participants to resist HIV stigma. Focusing on these capabilities that enable full personhood, we developed an effective culturally-tailored anti-stigma intervention for pregnant women living with HIV in Botswana. This theory-driven, multi-stage approach can be replicated to achieve stigma reduction for other outcomes, populations, and contexts.

Effect of Haemophilus influenzae Type b and 13-Valent Pneumococcal Conjugate Vaccines on Childhood Pneumonia Hospitalizations and Deaths in Botswana

BACKGROUND

Globally, pneumonia is the leading cause of death among children. Few data exist regarding the effect of Haemophilus influenzae type b (Hib) vaccine and 13-valent pneumococcal conjugate vaccine (PCV-13) on the burden of childhood pneumonia in African settings.

METHODS

We collected data on children aged 1 to 59 months at 3 hospitals in Botswana. Hib vaccine and PCV-13 were introduced in Botswana in November 2010 and July 2012, respectively. We compared pneumonia hospitalizations and deaths prevaccine (January 2009 to October 2010) with postvaccine (January 2013 to December 2017) using seasonally adjusted, interrupted time-series analyses.

RESULTS

We identified 6943 pneumonia hospitalizations and 201 pneumonia deaths. In the prevaccine period, pneumonia hospitalizations and deaths increased by 24% (rate, 1.24; 95% CI, .94-1.64) and 59% (rate, 1.59; 95% CI, .87-2.90) per year, respectively. Vaccine introduction was associated with a 48% (95% CI, 29-62%) decrease in the number of pneumonia hospitalizations and a 50% (95% CI, 1-75%) decrease in the number of pneumonia deaths between the end of the prevaccine period (October 2010) and the beginning of the postvaccine period (January 2013). During the postvaccine period, pneumonia hospitalizations and deaths declined by 6% (rate, .94; 95% CI, .89-.99) and 22% (rate, .78; 95% CI, .67-.92) per year, respectively.

CONCLUSIONS

Pneumonia hospitalizations and deaths among children declined sharply following introduction of Hib vaccine and PCV-13 in Botswana. This effect was sustained for more than 5 years after vaccine introduction, supporting the long-term effectiveness of these vaccines in preventing childhood pneumonia in Botswana.

Stigma, Structural Vulnerability, and "What Matters Most" Among Women Living With HIV in Botswana, 2017

Objectives. To explore whether beneficial health care policies, when implemented in the context of gender inequality, yield unintended structural consequences that stigmatize and ostracize women with HIV from "what matters most" in local culture. Methods. We conducted 46 in-depth interviews and 5 focus groups (38 individuals) with men and women living with and without HIV in Gaborone, Botswana, in 2017. Results. Cultural imperatives to bear children bring pregnant women into contact with free antenatal services including routine HIV testing, where their HIV status is discovered before their male partners'. National HIV policies have therefore unintentionally reinforced disadvantage among women with HIV, whereby men delay or avoid testing by using their partner's status as a proxy for their own, thus facilitating blame toward women diagnosed with HIV. Gossip then defines these women as "promiscuous" and as violating the essence of womanhood. We identified cultural and structural ways to resist stigma for these women. Conclusions. Necessary HIV testing during antenatal care has inadvertently perpetuated a structural vulnerability that propagates stigma toward women. Individual- and structural-level interventions can address stigma unintentionally reinforced by health care policies.

Identifying "What Matters Most" to Men in Botswana to Promote Resistance to HIV-Related Stigma

Despite a comprehensive national program of free HIV services, men living with HIV in Botswana participate at lower rates and have worse outcomes than women. Directed content analysis of five focus groups (n = 38) and 50 in-depth interviews with men and women with known and unknown HIV status in Gaborone, Botswana in 2017 used the "what matters most" (WMM) and "structural vulnerability" frameworks to examine how the most valued cultural aspects of manhood interact with HIV-related stigma. WMM for manhood in Botswana included fulfilling male responsibilities by being a capable provider and maintaining social status. Being identified with HIV threatened WMM, which fear of employment discrimination could further exacerbate. Our findings indicate how cultural and structural forces interact to worsen or mitigate HIV-related stigma for urban men in Botswana. These threats to manhood deter HIV testing and treatment, but interventions could capitalize on cultural capabilities for manhood to promote stigma resistance.

'Mothers moving towards empowerment' intervention to reduce stigma and improve treatment adherence in pregnant women living with HIV in Botswana: study protocol for a pragmatic clinical trial

BACKGROUND

With high rates of HIV and multiple vulnerable subgroups across diverse settings, there is a need for culturally based, HIV stigma reduction interventions. Pregnant women who are living with HIV are especially in need of services to protect not only their own but also their children's lives. Uptake of HIV services worldwide is hindered by stigma towards persons living with HIV/AIDS. While cultural context plays a key role in shaping HIV stigma, these insights have not yet been fully integrated into stigma reduction strategies. By utilizing the "What Matters Most" stigma framework, we propose that an intervention to counter culturally salient aspects of HIV stigma will improve treatment adherence and other relevant outcomes. A pragmatic clinical trial in Botswana will evaluate the "Mothers Moving towards Empowerment" (MME) intervention, which seeks to address HIV stigma in Botswana and to specifically engage pregnant mothers so as to promote antiretroviral therapy (ART) adherence in the postpartum period.

METHODS

This study will test MME against treatment as usual (TAU) among pregnant mothers diagnosed with HIV and their infants. Outcomes will be assessed during pregnancy and 16 weeks postpartum. Women who meet eligibility criteria are assigned to MME or TAU. Women assigned to MME are grouped with others with similar estimated delivery dates, completing up to eight intervention group sessions scheduled before week 36 of their pregnancies. Primary outcomes among mothers include (i) reducing self-stigma, which is hypothesized to mediate improvements in (ii) psychological outcomes (quality of life, depression and social functioning), and (iii) adherence to antenatal care and ART. We will also examine a set of follow-up infant birth outcomes (APGAR score, preterm delivery, mortality (at < 16 weeks), birth weight, vaccination record, and HIV status).

DISCUSSION

Our trial will evaluate MME, a culturally based HIV stigma reduction intervention using the "What Matters Most" framework, to reduce stigma and improve treatment adherence among pregnant women and their infants. This study will help inform further refinement of MME and preparation for a future large-scale, multisite, randomized controlled trial (RCT) in Botswana.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03698981 . Registered on October 8, 2018.

Placental Transfer of Respiratory Syncytial Virus Antibody Among HIV-Exposed, Uninfected Infants

BACKGROUND

Maternal human immunodeficiency virus (HIV) infection is associated with lower placental transfer of antibodies specific to several childhood pathogens. Our objective for this study was to evaluate the effect of maternal HIV infection on the placental transfer of respiratory syncytial virus (RSV)-neutralizing antibodies.

METHODS

We conducted a cross-sectional study of mothers and their newborn infants at a tertiary hospital in Gaborone, Botswana, between March 2015 and December 2015. We measured serum RSV antibody levels by using a microneutralization assay. We used multivariable linear regression to evaluate the effect of maternal HIV infection on maternal RSV antibody levels, placental transfer of RSV antibodies, and newborn RSV antibody levels.

RESULTS

Of 316 mothers, 154 (49%) were infected with HIV. The placental transfer ratios for RSV antibodies to HIV-exposed, uninfected (HEU) and HIV-unexposed, uninfected infants were 1.02 and 1.15, respectively. The geometric mean titer (95% confidence interval) of RSV-neutralizing antibodies was 2657 (2251-3136) among HEU newborns and 2911 (2543-3331) among HIV-unexposed, uninfected newborns. In multivariable analyses, maternal HIV infection was associated with lower placental transfer of RSV antibodies (P = .02) and a lower level of RSV antibodies among newborns (P = .002). Among HEU newborns, higher birth weight (P = .004) and an undetectable maternal antenatal viral load (P = .01) were associated with more effective placental transfer of RSV antibodies.

CONCLUSIONS

Maternal human immunodeficiency virus (HIV) infection is associated with lower mother-to-fetus transfer of serum RSV-neutralizing antibodies. HEU infants should be prioritized for preventive interventions for RSV. Maternal viral suppression through combination antiretroviral therapy has the potential to improve immunity to RSV among HIV-exposed infants.

Pediatric Spectrum of Allergic Diseases and Asthma in a Tertiary Level Hospital in Botswana: an Exploratory Retrospective Cross-Sectional Study

Purpose

This study aims to describe the spectrum of allergic diseases of children and adolescents in a single allergy treatment centre in Botswana, over a period of 8 years.

Patients and Methods

A retrospective cross-sectional study was conducted using medical records of all patients aged 18 years or younger, seen at an allergy treatment centre in Botswana. Data were presented descriptively. Association between variables was explored by χ²-test.

Results

Four hundred and seven patients with a mean age of 5.8 years (SD 4.4) at the time of presentation included 239 (58.7%) females and 365 (87.5%) black Africans. The most common diseases were asthma (n=249, 61.2%) followed by allergic rhinitis (AR) (n=232, 57.0%) and atopic dermatitis (AD) (n=165, 40.5%). One hundred and fifteen cases (46.2%) of asthmatic patients were skin prick test positive; sensitized to grass, moulds, dust mites and animal dander, in decreasing frequency, whereas those with allergic rhinitis (AR) and allergic conjunctivitis (AC) were sensitized to trees and all allergens identified in asthmatics. Concomitant asthma was diagnosed in 171 (73.7%) with AR, 71 (68.3%) with AC, 75 (45.5%) with AD and 42 (47.7%) with food allergy. The most common triggers for asthma exacerbations include upper respiratory tract infections, weather changes, and exposure to passive cigarette smoke. Paternal allergy and allergic disease in grandparents are predisposing factors for asthma (p=0.016 and p=0.001, respectively). Paternal allergy is also predisposed to AR (p=0.007), while maternal history of allergic disease was associated with AD (p=0.019).

Conclusion

The most common chronic pediatric conditions seen in our allergic disease study were asthma, allergic rhinitis and atopic dermatitis with the most common triggers being viral upper respiratory tract infections, weather changes and exposure to cigarette smoke, all of which are modifiable risk factors. This exploratory study lays the foundation for future interventional studies that may be directed towards the spectrum of allergic diseases.

Interpretation of pediatric chest radiographs by non-radiologist clinicians in Botswana using World Health Organization criteria for endpoint pneumonia

BACKGROUND

In low- and middle-income countries, chest radiographs are most frequently interpreted by non-radiologist clinicians.

OBJECTIVE

We examined the reliability of chest radiograph interpretations performed by non-radiologist clinicians in Botswana and conducted an educational intervention aimed at improving chest radiograph interpretation accuracy among non-radiologist clinicians.

MATERIALS AND METHODS

We recruited non-radiologist clinicians at a referral hospital in Gaborone, Botswana, to interpret de-identified chest radiographs for children with clinical pneumonia. We compared their interpretations with those of two board-certified pediatric radiologists in the United States. We evaluated associations between level of medical training and the accuracy of chest radiograph findings between groups, using logistic regression and kappa statistics. We then developed an in-person training intervention led by a pediatric radiologist. We asked participants to interpret 20 radiographs before and immediately after the intervention, and we compared their responses to those of the facilitating radiologist. For both objectives, our primary outcome was the identification of primary endpoint pneumonia, defined by the World Health Organization as presence of endpoint consolidation or endpoint effusion.

RESULTS

Twenty-two clinicians interpreted chest radiographs in the primary objective; there were no significant associations between level of training and correct identification of endpoint pneumonia; concordance between respondents and radiologists was moderate (κ=0.43). After the training intervention, participants improved agreement with the facilitating radiologist for endpoint pneumonia from fair to moderate (κ=0.34 to κ=0.49).

CONCLUSION

Non-radiologist clinicians in Botswana do not consistently identify key chest radiographic findings of pneumonia. A targeted training intervention might improve non-radiologist clinicians' ability to interpret chest radiographs.

Botswana's HIV response: Policies, context, and future directions

This brief report describes key periods in the history of the national public health response to the human immunodeficiency virus (HIV) epidemic in Botswana. It reveals the context leading to the development of HIV policies presently in place and current challenges that remain. The report concludes with opportunities for future directions, initiatives, and policy changes to reduce the high rates of HIV.

TB and TB-HIV care for adolescents and young adults

SETTING: Nine high-burden public tuberculosis (TB) clinics in Gaborone, Botswana.OBJECTIVE: To evaluate the challenges encountered, healthcare worker (HCW) approaches, and supported interventions in TB and TB-HIV (human immunodeficiency virus) care for adolescents and young adults (AYA, aged 10-24 years).DESIGN: Semi-structured interviews with HCW in TB clinics, analyzed using thematic analysis.RESULTS: Sixteen HCWs were interviewed. AYA developmental needs included reliance on family support for care, increasing autonomy, attending school or work, building trust in HCWs, and intensive TB education and adherence support. Stigma strongly influenced care engagement, including clinic attendance and HIV testing. Health system barriers to optimal AYA TB care included limited staffing and resources to follow-up or support. HCWs utilized intensive education and counseling, and transitioned AYA to community-based directly observed therapy whenever feasible. HCWs supported implementation of youth-friendly services, such as AYA-friendly spaces or clinic days, training in AYA care, use of mobile applications, and peer support interventions, in addition to health system strengthening.CONCLUSION: HCWs utilize dedicated approaches for AYA with TB, but have limited time and resources for optimal care. They identified several strategies likely to improve care and better retain AYAs in TB treatment. Further work is needed to study interventions to improve AYA TB care and outcomes.

High Rate of Serotype V Streptococcus agalactiae Carriage in Pregnant Women in Botswana

Maternal rectovaginal colonization is the major risk factor for early-onset neonatal sepsis due to Group B Streptococcus (GBS), a major cause of early life morbidity and mortality. Transmission generally occurs perinatally from colonized mothers to infants. Vaccines targeting a subset of GBS serotypes are under development, but GBS epidemiology remains poorly understood in many African nations. We performed a cross-sectional study of GBS colonization among pregnant women at two sites in Botswana, a country with minimal prior GBS carriage data. We found a rectovaginal colonization rate of 19%, comparable with studies in other regions; however, we also noted a striking predominance of serotype V (> 45% of strains). Although further studies are required to delineate the burden of invasive GBS disease in Botswana and the generalizability of type V epidemiology, these data provide a useful baseline for understanding the potential local impact of GBS prevention strategies, including vaccines.

The prevalence and clinical characteristics of pertussis-associated pneumonia among infants in Botswana

Background

There are scant data on the prevalence and clinical course of pertussis disease among infants with pneumonia in low- and middle-income countries. While pertussis vaccination coverage is high (≥90%) among infants in Botswana, human immunodeficiency virus (HIV) infection affects nearly one-third of pregnancies.

We aimed to evaluate the prevalence and clinical course of pertussis disease in a cohort of HIV-unexposed uninfected (HUU), HIV-exposed uninfected (HEU), and HIV-infected infants with pneumonia in Botswana.

Methods

We recruited children 1–23 months of age with clinical pneumonia at a tertiary care hospital in Gaborone, Botswana between April 2012 and June 2016. We obtained nasopharyngeal swab specimens at enrollment and tested these samples using a previously validated in-house real-time PCR assay that detects a unique sequence of the porin gene of Bordetella pertussis.

Results

B. pertussis was identified in 1/248 (0.4%) HUU, 3/110 (2.7%) HEU, and 0/33 (0.0%) HIV-infected children. All pertussis-associated pneumonia cases occurred in infants 1–5 months of age (prevalence, 1.0% [1/103] in HUU and 4.8% [3/62] in HEU infants). No HEU infants with pertussis-associated pneumonia were taking cotrimoxazole prophylaxis at the time of hospital presentation. One HUU infant with pertussis-associated pneumonia required intensive care unit admission for mechanical ventilation, but there were no deaths.

Conclusions

The prevalence of pertussis was low among infants and young children with pneumonia in Botswana. Although vaccination against pertussis in pregnancy is designed to prevent classical pertussis disease, reduction of pertussis-associated pneumonia might be an important additional benefit.

Risk factors for gastric aspirate culture contamination in children evaluated for tuberculosis in Botswana

SETTING

Gastric aspirate (GA) sample culture is commonly performed in children evaluated for tuberculosis (TB) who cannot expectorate sputum. Contamination limits culture yield and negatively impacts care.

OBJECTIVE

To evaluate the proportion of and factors associated with GA contamination at a central TB reference laboratory in Botswana.

DESIGN

This was a 5-year cross-sectional study of untreated children aged 12 years evaluated for TB with the first GA sample registered at the National Tuberculosis Reference Laboratory. We performed descriptive statistics to assess the risk of contamination with patient age, sex, transport time and distance, culture medium, and facility type. We generated multivariable logistic regression models using generalized estimating equation extension.

RESULTS

We analyzed 3642 samples. The median age was 2 years (interquartile range [IQR] 1-4), median transport time was 4 days (IQR 2-7), and 64.1% of samples were from clinics or health posts. TB culture positivity was 1.6% (60/3642), and contamination was observed in 35.6% (1298/3642). Hospital collection was associated with lower contamination risk (adjusted OR [aOR] 0.53, 95%CI 0.40-0.69) and Mycobacteria Growth Indicator Tube vs. Löwenstein-Jensen medium with higher risk (aOR 1.88, 95%CI 1.51-2.34).

CONCLUSION

In routine care settings, high sample contamination and low TB culture yield were observed. This raises questions about the collection technique and storage in lower-level facilities and affirms higher risk with a liquid culture medium.

Initiation of anti-tuberculosis treatment in children following gastric aspirate testing, Botswana, 2008-2012

SETTING

Diagnosing pediatric tuberculosis (TB) is difficult; to improve diagnosis, gastric aspiration (GA) was performed in 121 Botswana health facilities.

OBJECTIVE

To describe treatment initiation and outcomes in children with a positive GA result and those treated empirically.

METHODS

Children with smear or culture-positive GA or those clinically diagnosed were referred for anti-tuberculosis treatment. Treatment initiation and outcomes were assessed from February 2008 to December 2012 using name-based matching algorithms of the GA database; treatment initiation was captured in the electronic TB registry. Analyses included descriptive statistics and regression models.

RESULTS

GA was conducted in 1268 children. Among these, 121 (9.5%) were GA-positive; and treatment was initiated in 90 (74.3%). An additional 137 (11.9%) were treated empirically. More than a third (36.4%) had known human immunodeficiency virus status (positive or negative); this was significantly associated with TB treatment initiation (adjusted odds ratio [aOR] 1.8, 95%CI 1.3-2.5); P < 0.05). Among the 90 children with a positive GA result, nearly all either completed treatment (78.9%) or were on treatment (20.0%) at the time of data collection.

CONCLUSION

We could not find documentation of treatment for more than a quarter of the children with laboratory-confirmed TB, an important gap that calls for further examination. The failure to initiate prompt treatment requires investigation and urgent action.

Survey of health care worker knowledge about childhood tuberculosis in high-burden centers in Botswana

BACKGROUND

Quantifying health care workers' (HCWs') knowledge about tuberculosis (TB) informs educational interventions. We assessed HCWs' knowledge about childhood TB in Botswana.

METHODS

Semi-structured interviews were conducted with HCWs at 46 sites around Botswana using a piloted instrument. Transcripts were double-coded using a coding schema. Discrepancies were resolved by consensus and a systematic thematic analysis was performed.

RESULTS

The sites (42 clinics and 4 hospitals) were urban (n = 9, 20%), semi-urban (n = 10, 22%) and rural (n = 27, 58%). HCWs included nurses (n = 42, 89%) and nurse assistants (n = 4, 11%). Sixteen (56%) HCWs were the TB focal persons for their site. Themes did not vary by type of site, HCW or TB focal person. Although the level of knowledge about secondary prevention using isoniazid prophylaxis therapy was fair, implementation was poor and contact tracing was not being performed. Barriers to TB diagnosis included poor knowledge about TB in the community, minimal diagnostics at site of care and not receiving test results. However, most HCWs reported that treatment initiation and the calculation of appropriate dosages were easy once the diagnosis had been made.

CONCLUSIONS

In Botswana, HCWs' levels of knowledge about childhood TB varied greatly. The areas of TB diagnosis, screening and prophylaxis in children need additional attention in TB training courses; however, increased knowledge alone would not overcome all the barriers identified by the HCWs.

'That's when I struggle' … Exploring challenges faced by care givers of children with tuberculosis in Botswana

SETTING

Government-funded public health clinics in and around Gaborone, Botswana.

OBJECTIVE

To explore the challenges faced by care givers of children on treatment for tuberculosis (TB) to inform a more child-friendly approach to Botswana's National TB Programme (NTP) strategy.

DESIGN

Qualitative study using 28 in-depth interviews with care givers of children receiving anti-tuberculosis treatment.

RESULTS

Care givers identified five main challenges: long delays in their child's diagnosis, difficulty attending clinic for daily treatment, difficulty administering TB medications, stock-outs of TB medications leading to treatment interruptions, and inadequate TB education. Care givers prioritized these same five areas to improve the overall management of their child's TB.

CONCLUSION

Our findings suggest that despite accessing care through an NTP that adheres to World Health Organization guidelines, care givers for children on treatment in Botswana continue to encounter significant challenges. While each of these represents a potential threat to successful treatment, they can be addressed with relatively small systematic and programmatic adjustments. These results will inform the next version of the Botswana NTP guidelines towards a more child- and care giver-centered approach.

Loss to follow-up among adolescents with tuberculosis in Gaborone, Botswana

SETTING

Nine high-burden public tuberculosis (TB) clinics in Gaborone, Botswana.

OBJECTIVE

To describe clinical characteristics and outcomes among adolescents with TB and compare loss to follow-up (LTFU) rates with that among youth and adult cases.

DESIGN

Retrospective cohort study of TB cases registered from 2012 to 2014. Clinical characteristics and treatment outcomes were compared among adolescents (age 10-19 years), youth (20-24 years) and a systematic sample of adults (⩾25 years).

RESULTS

We analyzed 120 adolescent, 210 youth, and 548 adult cases. Adolescents had twice the risk of LTFU over adults (RR 2.0, 95%CI 1.1-3.7, P = 0.03), and higher LTFU than youth; this was not significant (RR 1.4, 95%CI 0.7-2.9, P = 0.32). Of those with human immunodeficiency virus (HIV) infection, 8/35 (22.9%) adolescents were LTFU, compared with 3/51 (5.9%) youth, and 25/407 (6.1%) adults (P = 0.001). In a multivariable model, adolescence (OR 3.0, 95%CI 1.3-6.5, P < 0.01), HIV positivity (OR 2.2, 95%CI 1.1-4.5, P = 0.02), and extra-pulmonary TB (OR 2.2, 95%CI 1.2-4.0, P = 0.01) were each associated with LTFU.

CONCLUSION

Adolescents treated for TB had greater LTFU than youth and adults, particularly in the setting of TB-HIV coinfection. Further work should clarify the generalizability of these findings and investigate poor outcomes among adolescents with TB.

Investigating Mediators of the Poor Pneumonia Outcomes of Human Immunodeficiency Virus-Exposed but Uninfected Children

BACKGROUND

Human immunodeficiency virus-exposed but uninfected (HIV-EU) children have a higher mortality rate than the children of HIV-negative mothers (HIV-unexposed). Causal mediators of the poor health outcomes of HIV-EU children remain poorly defined.

METHODS

We conducted a hospital-based prospective cohort study of children aged 1 to 23 months with clinically defined pneumonia. The children were recruited at a referral hospital in Gaborone, Botswana, between April 2012 and June 2016. The primary outcome, treatment failure at 48 hours, was assessed by an investigator blinded to the children's HIV-exposure status. We examined associations between HIV exposure and pneumonia outcomes in HIV-uninfected children. We next determined whether the effect of HIV exposure on outcomes was mediated by low-birth-weight status, nonbreastfeeding, malnutrition, in utero exposure to combination antiretroviral therapy, or pneumonia severity.

RESULTS

A total of 352 HIV-uninfected children were included in these analyses, including 245 (70%) HIV-unexposed and 107 (30%) HIV-EU children. Their median age was 7.4 months, and 57% were male. Treatment failure occurred in 111 (32%) children, and 19 (5.4%) children died. HIV-EU children were more likely to fail treatment (risk ratio [RR], 1.57 [95% confidence interval (CI), 1.19-2.07]; P = .002) and had a higher in-hospital mortality rate (RR, 4.50 [95% CI, 1.86-10.85]; P = .001) than HIV-unexposed children. Nonbreastfeeding mediated 47% of the effect of HIV exposure on the risk of in-hospital death.

CONCLUSIONS

HIV-EU children have worse pneumonia outcomes than HIV-unexposed children. Nonbreastfeeding mediates nearly half of the effect of HIV exposure on pneumonia mortality. Our findings provide additional evidence for a mortality benefit of breastfeeding by HIV-EU children.

Correlation of Clinical Outcomes With Multiplex Molecular Testing of Stool From Children Admitted to Hospital With Gastroenteritis in Botswana

BACKGROUND

Diarrheal disease is a leading cause of death for young children. Most pediatric gastroenteritis is caused by viral pathogens; consequently, current recommendations advocate against routine antibacterial therapy if children present without bloody stools.

METHODS

In this prospective cohort study, we enrolled children with severe acute gastroenteritis admitted to hospital in Botswana. Details of presenting history, physical examination, and course in the hospital were recorded. Stool samples were characterized using a 15 pathogen polymerase chain reaction assay.

RESULTS

There were 671 participants with a median age of 8.3 months; 77 (11%) had severe acute malnutrition. Only 74 children had bloody stools, of whom 48 (65%) had a detectable bacterial pathogen, compared to 195 of 592 (33%) of those without. There were 26 deaths (3.9%). Covariates associated with death in multivariable logistic regression were the detection of any of Campylobacter/Shigella/enterotoxigenic Escherichia coli (odds ratio [OR] 2.57, 95% confidence interval [CI] 1.07-6.17), severe acute malnutrition (OR 4.34, 95% CI 1.79-10.5), and antibiotic therapy (OR 8.82, 95% CI 2.03-38.2). There was no significant association between bloody stools and death, and the effect of Campylobacter/Shigella/enterotoxigenic E. coli infection on death was not modified by the presence of bloody stools.

CONCLUSIONS

Detection of bacterial enteropathogens is associated with increased mortality in children in sub-Saharan Africa. Unfortunately, most children with these infections do not have bloody stools, and bloody dysentery was not found to be associated with worse outcomes. Clinical trials evaluating outcomes associated with more aggressive diagnostic strategies in children presenting with severe acute gastroenteritis in sub-Saharan Africa should be undertaken.

Rural exposure during medical education and student preference for future practice location - a case of Botswana

Background

Botswana’s medical school graduated its first class in 2014. Given the importance of attracting doctors to rural areas the school incorporated rural exposure throughout its curriculum.

Aim

This study explored the impact of rural training on students’ attitudes towards rural practice.

Setting

The University of Botswana family medicine rural training sites, Maun and Mahalapye.

Methods

The study used a mixed-methods design. After rural family medicine rotations, third- and fifth-year students were invited to complete a questionnaire and semi-structured interview. Data were analysed using descriptive statistics and thematic analysis.

Results

The thirty-six participants’ age averaged 23 years and 48.6% were male. Thirty-three desired urban practice in a public institution or university. Rural training did not influence preferred future practice location. Most desired specialty training outside Botswana but planned to practice in Botswana. Professional stagnation, isolation, poorly functioning health facilities, dysfunctional referral systems, and perceived lack of learning opportunities were barriers to rural practice. Lack of recreation and poor infrastructure were personal barriers. Many appreciated the diversity of practice and supportive staff seen in rural practice. Several considered monetary compensation as an enticement for rural practice. Only those with a rural background perceived proximity to family as an incentive to rural practice.

Conclusion

The majority of those interviewed plan to practice in urban Botswana, however, they did identify factors that, if addressed, may increase rural practice in the future. Establishing systems to facilitate professional development, strengthening specialists support, and deploying doctors near their home towns are strategies that may improve retention of doctors in rural areas.

Treatment Failures and Excess Mortality Among HIV-Exposed, Uninfected Children With Pneumonia

BACKGROUND

Human immunodeficiency virus (HIV)-exposed, uninfected (HIV-EU) children are at increased risk of infectious illnesses and mortality compared with children of HIV-negative mothers (HIV-unexposed). However, treatment outcomes for lower respiratory tract infections among HIV-EU children remain poorly defined.

METHODS

We conducted a hospital-based, prospective cohort study of N = 238 children aged 1-23 months with pneumonia, defined by the World Health Organization. Children were recruited within 6 hours of presentation to a tertiary hospital in Botswana. The primary outcome--treatment failure at 48 hours--was assessed by an investigator blinded to HIV exposure status.

RESULTS

Median age was 6.0 months; 55% were male. One hundred fifty-three (64%) children were HIV-unexposed, 64 (27%) were HIV-EU, and 20 (8%) were HIV-infected; the HIV exposure status of 1 child could not be established. Treatment failure at 48 hours occurred in 79 (33%) children, including in 36 (24%) HIV-unexposed, 30 (47%) HIV-EU, and 12 (60%) HIV-infected children. In multivariable analyses, HIV-EU children were more likely to fail treatment at 48 hours (risk ratio [RR]: 1.83, 95% confidence interval [CI]: 1.27-2.64, P = .001) and had higher in-hospital mortality (RR: 4.31, 95% CI: 1.44-12.87, P = .01) than HIV-unexposed children. Differences in outcomes by HIV exposure status were observed only among children under 6 months of age. HIV-EU children more frequently received treatment with a third-generation cephalosporin, but this did not reduce the risk of treatment failure in this group.

CONCLUSIONS

HIV-EU children with pneumonia have higher rates of treatment failure and in-hospital mortality than HIV-unexposed children during the first 6 months of life. Treatment with a third-generation cephalosporins did not improve outcomes among HIV-EU children.

The effect of exposure to wood smoke on outcomes of childhood pneumonia in Botswana

SETTING

Tertiary hospital in Gaborone, Botswana.

OBJECTIVE

To examine whether exposure to wood smoke worsens outcomes of childhood pneumonia.

DESIGN

Prospective cohort study of children aged 1-23 months meeting clinical criteria for pneumonia. Household use of wood as a cooking fuel was assessed during a face-to-face questionnaire with care givers. We estimated crude and adjusted risk ratios (RRs) and 95% confidence intervals (CIs) for treatment failure at 48 h by household use of wood as a cooking fuel. We assessed for effect modification by age (1-5 vs. 6-23 months) and malnutrition (none vs. moderate vs. severe).

RESULTS

The median age of the 284 enrolled children was 5.9 months; 17% had moderate or severe malnutrition. Ninety-nine (35%) children failed treatment at 48 h and 17 (6%) died. In multivariable analyses, household use of wood as a cooking fuel increased the risk of treatment failure at 48 h (RR 1.44, 95%CI 1.09-1.92, P = 0.01). This association differed by child nutritional status (P = 0.02), with a detrimental effect observed only among children with no or moderate malnutrition.

CONCLUSIONS

Exposure to wood smoke worsens outcomes for childhood pneumonia. Efforts to prevent exposure to smoke from unprocessed fuels may improve pneumonia outcomes among children.

Yield of contact tracing from pediatric tuberculosis index cases in Gaborone, Botswana

SETTING

Contact tracing using pediatric index cases has not been adequately investigated in high tuberculosis (TB) and human immunodeficiency virus (HIV) prevalence settings.

OBJECTIVE

To determine the yield of contact tracing in household contacts of pediatric TB index cases in Botswana.

DESIGN

Index cases included all pediatric (age ≤ 13 years) TB admissions from January 2009 to December 2011 to Botswana's largest referral hospital. A contact tracing team identified cases, conducted home visits, symptom-screened contacts and referred those with ≥ 1 TB symptoms. The primary outcome was newly diagnosed TB in a contact.

RESULTS

From 163 pediatric index cases, 548 contacts were screened (median 3 contacts/case, interquartile range [IQR] 2-4). Of these, 49 (9%) were referred for positive symptoms on screening and 27/49 (55%) were evaluated for active TB. Twelve new TB cases were diagnosed (12/548, 2.2%); the median age was 31 years (IQR 23-38); 11 (92%) were smear-positive. Ten (83%) had known HIV status: 7 (70%) were HIV-positive. To find one new TB case, the number needed to contact trace (index cases/new cases) was 13.6, and the number needed to screen (contacts/new cases) was 46.

CONCLUSION

This yield of contact tracing using pediatric index cases is similar to the traditional adult index case approach. Improving the proportion of symptomatic contacts evaluated may increase yield.

Yield of screening for TB and HIV among children failing to thrive in Botswana

BACKGROUND

Failure to thrive (FTT) is a sign of tuberculosis (TB) and human immunodeficiency virus (HIV) infection. We assessed TB and HIV prevalence in children with FTT at one clinic in Botswana.

METHODS

In July 2010, we screened all children attending a 'Well Child' clinic for FTT. Children with FTT were referred to a paediatrician who: (i) assessed causes of FTT, (ii) evaluated for HIV and TB and (iii) reviewed the patient chart for evaluations for TB and HIV.

RESULTS

Of 919 children screened, 176 (19%) had FTT. One hundred eighteen (67%) children saw a paediatrician, and of these, 95 (81%) completed the TB evaluation. TB was newly diagnosed in 6 of 95 (6%). At review, HIV status was known in 23 of 118 (19%). Ninety-five had an unknown HIV status. Forty-five (47%) tested for HIV; all tested HIV-negative.

CONCLUSION

TB and HIV screening among children with FTT diagnosed TB in 6% of cases completing an evaluation, but no new HIV infections.

Factors associated with parental readiness to make changes for overweight children

OBJECTIVE

The prevalence of childhood obesity is increasing in the United States. However, it has been difficult to help children successfully lose weight and maintain weight loss. Parental involvement in this effort is important. Currently, little is known about parents' readiness to make behavior changes to help their children lose weight. The objective of this study was to describe demographic factors and parental perceptions associated with parents' readiness to make weight-reducing lifestyle changes for their overweight and at-risk-for-overweight children.

METHODS

A total of 151 parents of children who were aged 2 to 12 years and had BMIs >or=85th percentile for age and gender completed a 43-item self-administered questionnaire. Parental stage of change, defined as precontemplation stage, contemplation stage, and preparation/action stage, was determined using an algorithm involving current parental practices and future intentions. Parents in the preparation/action stage were considered to be ready to make behavior changes to help their child lose weight. Maximum-likelihood multinomial logistic regression was used to identify demographics and perceptions associated with parental stage of change.

RESULTS

Sixty-two percent of the children had a BMI >or=95th percentile. Their mean age was 7.5 years, and 53% were male. Of the 151 parents, 58 (38%) were in the preparation/action stage of change, 26 (17%) were in the contemplation stage, and 67 (44%) were in the precontemplation stage. Factors associated with being in the preparation/action stage of change were having overweight or older (>or=8 years) children, believing that their own weight or child's weight was above average, and perceiving that their child's weight was a health problem. After controlling for multiple factors, having an older child (odds ratio [OR]: 2.99; 95% confidence interval [CI]: 1.18-7.60), believing that they themselves were overweight (OR: 3.45; 95% CI: 1.36-8.75), and perceiving that their child's weight was a health problem (OR: 9.75; 95% CI: 3.43-27.67) remained significantly associated with being in the preparation/action stage of change.

CONCLUSIONS

Several demographic factors and personal perceptions are associated with a parent's readiness to help his or her child lose weight. Knowledge of these factors may be beneficial to providers and program developers when addressing pediatric overweight with parents and initiating new interventions.