A case-control study of risk factors for incident hepatitis B virus infection in South African blood donors.

OBJECTIVES: Hepatitis B virus (HBV) infection remains a global health problem. Risk factors for HBV infection are usually assessed in prevalent rather than incident infections. To identify demographic and behavioral risks associated with incident HBV among South African blood donors. METHODS: A case-control study was performed between November 2014 and January 2018. Cases were blood donors testing positive for HBV DNA with or without hepatitis B surface antigen but negative for antibody to hepatitis B core antigen. Participants completed an audio computer-assisted structured interview on exposures during the previous 6 months. Sex-specific multivariable logistic regression yielded independent associations between risks and HBV infection. RESULTS: 56 females and 37 males with incident HBV were compared to 438 female and 439 male controls, respectively. For females, risk factors were accepting money or goods for sex, using agents to prepare one's anus prior to anal sex, penetrating injury, non-Black race, and lower educational status. Men reporting homosexual or bisexual orientation or sex with other men, previous injury, referral for HBV testing, or lack of medical insurance were at increased risk. For both sexes, having more than two male sexual partners increased risk. CONCLUSIONS: Sexual behaviors predominated over parenteral exposures as risks for incident HBV in both female and male blood donors.

The Capacity of HIV Care Facilities to Implement Strategies Recommended by the Ending the HIV Epidemic Initiative: The Medical Monitoring Project Facility Survey.

BACKGROUND: Data are needed to assess the capacity of HIV care facilities to implement recommended Ending the HIV Epidemic activities. SETTING: US HIV care facilities. METHODS: We analyzed 2021 survey data from 514 facilities that were recruited from a census of facilities providing care to a national probability sample of US adults with HIV. We present weighted estimates of facility characteristics, services, and policies and estimates of the proportion of all US HIV patients attending these facilities. RESULTS: Among HIV care facilities, 37% were private practices, 72% were in areas with population >1 million, and 21% had more than 1000 HIV patients. Most provided preexposure prophylaxis (83%) and postexposure prophylaxis (84%). More than 67% of facilities provided HIV-specific stigma or discrimination training for all staff (covering 70% of patients) and 66% provided training on cultural competency (covering 74% of patients). A majority of patients attended facilities that provided on-site access to HIV/sexually transmitted infection (STI) transmission risk reduction counseling (89%); fewer had on-site access to treatment for substance use disorders (35%). We found low provision of on-site assistance with food banks or meal delivery (14%) and housing (33%). Approximately 71% of facilities reported using data to systematically monitor patient retention in care. On-site access to adherence tools was available at 58% of facilities; 29% reported notifying patients of missed prescription pickups. CONCLUSION: Results indicate some strengths that support Ending the HIV Epidemic-recommended strategies among HIV care facilities, such as high availability of preexposure prophylaxis/postexposure prophylaxis, as well as areas for improvement, such as provision of staff antistigma trainings and adherence supports.

Integrated Early Childhood Development in Cambodia: Protocol of a Cluster Stepped-Wedge Trial.

OBJECTIVES: Limited evidence is available on mechanisms linking integrated, multisector interventions with early childhood development. The Integrated Early Childhood Development program aims to improve children's development by promoting targeted caregiving behaviors beginning prenatally through age 5 years, in partnership with the Royal Government of Cambodia. METHODS: This cluster stepped-wedge trial is being conducted in Cambodia among 3 cohorts, encompassing 339 villages and 1790 caregivers who are pregnant or caring for a child aged <5 years. The 12- to 15-month intervention is delivered to each cohort using a staggered stepped-wedge design. Among all cohorts, enrollment evaluations will be followed by 3 data collection waves. Targeted caregiving interventions are provided through community, group, and home-visiting platforms. Child development is measured using the Caregiver Reported Early Development Instrument and the Early Childhood Development Index 2030. The evaluation assesses mediation through targeted caregiving behaviors: responsive caregiving, nutrition, health and hygiene, and household stability and support; moderation by household wealth, caregiver education, and child birth weight; and sustainability after the intervention concludes. CONCLUSIONS: This protocol article describes the plans for a cluster randomized controlled trial to measure the impact of an integrated, multisector intervention on children's development. By partnering with the Royal Government of Cambodia and addressing intervention pathways and moderators, this trial will provide guidance for policies and programs to promote early childhood development using principles of implementation science and equity, including increased investment for vulnerable families.

U.S. Women's Knowledge of Reproductive Biology.

BACKGROUND: Having accurate knowledge of reproductive biology can help women to improve their general, sexual, and reproductive health and assert their sexual and reproductive rights. METHODS: This cross-sectional study examined knowledge of three topics (age-related fertility decline, egg supply, fertile period) among a national probability sample of 1,779 nonsterilized, English-speaking women (aged 18-29 years) in the U.S. general population. Using bivariate and multivariable regressions, we assessed associations between knowledge of these topics and individual characteristics. RESULTS: Most respondents were unmarried (63%), childless (78%), and intended to have children (65%); 51% did not know whether they would have difficulty conceiving, and 44% had discussed fertility-related topics with a health care provider. More respondents knew the age of marked fertility decline (62%) than the fertile period (59%) or that ovaries do not continuously produce new eggs (45%); 22% knew all three topics, and 13% knew none. In multivariable analysis, knowledge was positively associated (p < .001) with education, income, and having regular periods. Black and Asian respondents and those for whom religion was very important were less likely (all p values < .01) than White and nonreligious respondents to know all three topics. Knowledge was unrelated to relationship status, parity, childbearing intentions, receipt of fertility-related counseling or services, self-perceived infertility risk, or health status; the relationship with Hispanic ethnicity approached but did not reach significance (p = .08). CONCLUSIONS: Young U.S. women have incomplete knowledge of aspects of their reproductive biology; these knowledge gaps could increase their risk of adverse health and reproductive outcomes. Policy-, provider-, and client-level interventions are warranted to address these knowledge gaps.

Blood Center Testing Allows the Detection and Rapid Treatment of Acute and Recent HIV Infection.

Blood donations in South Africa are tested for HIV RNA using individual donation NAT (ID-NAT), allowing detection and rapid antiretroviral therapy (ART) of acute HIV infections. We enrolled a cohort of acute and recent HIV-infected blood donation candidates in South Africa in 2015-2018, measured HIV antibody, ID-NAT, and recency of infection <195 days (Sedia LAg) at enrollment and initiated early ART. A small cohort of HIV elite controllers was followed without treatment. HIV reservoir measurements included ultrasensitive plasma RNA, cell-associated HIV RNA, and total DNA. Enrollment of 18 Fiebig I-III and 45 Fiebig IV-VI HIV clade C subjects occurred a median of 18 days after index blood donation. ART was administered successfully and compliance with follow-up visits was excellent. There were only minimal differences in HIV reservoir between ART initiation in Fiebig stages I-III vs. IV-VI, but ART noncompliance increased HIV reservoir. In 11 untreated HIV elite controllers, HIV reservoir levels were similar to or higher than those seen in our early treated cohort. National blood services can identify acute HIV cohorts for subsequent HIV cure research studies. Among HIV clade C-infected donors, HIV reservoir differed little by Fiebig stage at treatment initiation, but was smaller than in chronically treated HIV and those with ART noncompliance.

Elevated risk for iron depletion in high-school age blood donors.

BACKGROUND: High school students 16 to 18 years-old contribute 10% of the US blood supply. Mitigating iron depletion in these donors is important because they continue to undergo physical and neurocognitive development. STUDY DESIGN AND METHODS: Study objectives were to determine the prevalence of iron depletion in 16- to 18-year-old donors and whether their risk for iron depletion was greater than adult donors. Successful, age-eligible donors were enrolled from high school blood drives at two large US blood centers. Plasma ferritin testing was performed with ferritin less than 12 ng/mL as our primary measure of iron depletion and ferritin less than 26 ng/mL a secondary measure. Multivariable repeated-measures logistic regression models evaluated the role of age and other demographic/donation factors. RESULTS: Ferritin was measured from 4265 enrollment donations September to November 2015 and 1954 follow-up donations through May 2016. At enrollment, prevalence of ferritin less than 12 ng/mL in teenagers was 1% in males and 18% in females making their first blood donation, and 8% in males and 33% in females with prior donations. Adjusted odds for ferritin less than 12 ng/mL were 2.1 to 2.8 times greater in 16- to 18-year-olds than in 19- to 49-year-olds, and for ferritin less than 26 ng/mL were 3.3- to 4.7-fold higher in 16- to 18-year-olds. Progression to hemoglobin deferral was twice as likely in 16- to 18-year-old versus 19- to 49-year-old females. CONCLUSION: Age 16 to 18 years-old is an independent risk factor for iron deficiency in blood donors at any donation frequency. Blood centers should implement alternate eligibility criteria or additional safety measures to protect teenage donors from iron depletion.

Risks and rewards of using prepaid vs. postpaid incentive checks on a survey of physicians.

BACKGROUND: Survey researchers use monetary incentives as a strategy to motivate physicians' survey participation. Experiments from general population surveys demonstrate that prepaid incentives increase response rates and lower survey administration costs relative to postpaid incentives. Experiments comparing these two incentive strategies have rarely been attempted with physician samples. METHODS: A nationally representative sample of oncologists was recruited to participate in the National Survey of Precision Medicine in Cancer Treatment. To determine the optimal strategy for survey incentives, sample members were randomly assigned to receive a $50 prepaid incentive check or a $50 promised (postpaid) incentive check. Outcome measures for this incentives experiment include cooperation rates, speed of response, check-cashing behavior, and comparison of hypothetical costs for different incentive strategies. RESULTS: Cooperation rates were considerably higher for sample members in the prepaid condition (41%) than in the postpaid condition (29%). Similar differences in cooperation rates were seen for physicians when stratified by region, size of the physician's metropolitan statistical area, specialty, and gender by age. Survey responders in the prepaid condition responded earlier in the field period than those in the postpaid condition, thus requiring fewer contacts. In the prepaid group, 84% of sample members who responded with a completed survey cashed the incentive check and only 6% of nonresponders cashed the check. In the postpaid condition, 72% of survey responders cashed the check; nonresponders were not given a check. The relatively higher cooperation rates and earlier response of the responders in the prepaid condition was associated with a 30% cost savings for the prepaid condition compared to the postpaid incentive condition. CONCLUSIONS: The results of this study suggest that the rewards of offering physicians a prepaid incentive check outweigh the possible risks of nonresponders cashing the check. The relative cost benefit of this strategy is likely to vary depending on the amount of the incentive relative to the costs of additional contact attempts to nonresponders.

Risk factors for peripartum blood transfusion in South Africa: a case-control study.

BACKGROUND: Obstetric hemorrhage (OH) and access to peripartum blood transfusion remains a global health challenge. The rates of peripartum transfusion in South Africa exceed those in high-income countries despite comparable rates of OH. We sought to evaluate factors associated with peripartum transfusion. STUDY DESIGN AND METHODS: A case-control study was conducted at four large South African hospitals. Transfused peripartum women (cases) and nontransfused controls were stratum matched 1:2 by hospital and delivery date. Data on obstetric, transfusion, and human immunodeficiency virus (HIV) history were abstracted from medical records. Blood was obtained for laboratory evaluation. We calculated unadjusted and adjusted odds ratios (ORs) for transfusion using logistic regression. RESULTS: A total of 1200 transfused cases and 2434 controls were evaluated. Antepartum hemorrhage (OR, 197.95; 95% confidence interval [CI], 104.27-375.78), hemorrhage with vaginal delivery (OR, 136.46; 95% CI, 75.87-245.18), prenatal anemia (OR, 22.76; 95% CI, 12.34-41.93 for prenatal hemoglobin level < 7 g/dL), and failed access to prenatal care (OR, 6.71; 95% CI, 4.32-10.42) were the major risk factors for transfusion. Platelet (PLT) count (ORs, 4.10, 2.66, and 1.77 for ≤50 × 109 , 51 × 109 -100 × 109 , and 101 × 109 -150 × 109 cells/L, respectively), HIV infection (OR, 1.29; 95% CI, 1.02-1.62), and admitting hospital (twofold variation) were also associated with transfusion. Mode of delivery, race, age category, gravidity, parity, gestational age, and birthweight were not independently associated with transfusion. CONCLUSION: Major risk factors of peripartum transfusion in South Africa, namely, prenatal anemia and access to prenatal care, may be amenable to intervention. HIV infection and moderately low PLT count are novel risk factors that merit further investigation.

The impact of human immunodeficiency virus infection on obstetric hemorrhage and blood transfusion in South Africa.

BACKGROUND: Globally, as in South Africa, obstetric hemorrhage (OH) remains a leading cause of maternal mortality and morbidity. Although blood transfusion is critical to OH management, the incidence and predictors of transfusion as well as their relation to human immunodeficiency virus (HIV) infection are poorly described. STUDY DESIGN AND METHODS: A cross-sectional study was conducted of all peripartum patients at four major hospitals in South Africa (April to July 2012). Comprehensive clinical data were collected on patients who sustained OH and/or were transfused. Logistic regression was used to model risk factors for OH and transfusion. RESULTS: A total of 15,725 peripartum women were evaluated, of whom 3969 (25.2%) were HIV positive. Overall, 387 (2.5%) women sustained OH and 438 (2.8%) received transfusions, including 213 (1.4%) women with both OH and transfusion. There was no significant difference in OH incidence between HIV-positive (2.8%) and HIV-negative (2.3%) patients (adjusted odds ratio [OR], 0.95; 95% confidence interval [CI], 0.72-1.25). In contrast, the incidence of blood transfusion was significantly higher in HIV-positive (3.7%) than in HIV-negative (2.4%) patients (adjusted OR, 1.52; 95% CI, 1.14-2.03). Other risk factors for transfusion included OH, low prenatal hemoglobin, the treating hospital, lack of prenatal care, and gestational age of not more than 34 weeks. CONCLUSION: In the South African obstetric setting, the incidence of peripartum blood transfusion is significantly higher than in the United States and other high-income countries while OH incidence is similar. While OH and prenatal anemia are major predictors of transfusion, HIV infection is a common and independent contributing factor.

Effect of a Nutrient Rich Foods consumer education program: results from the nutrition advice study.

BACKGROUND: The Nutrient Rich Foods (NRF) approach to eating uses the NRF Index, a nutrient profiling metric to help consumers choose foods that contain more vitamins, minerals, and other nutrients per kilocalorie. Research is needed to test the efficacy of dietary guidance using nutrient profiling systems to rank foods. OBJECTIVE: To examine whether nutrition education and supporting materials would increase understanding of the NRF approach and improve food shopping, meal planning, consumption of nutrient-rich foods, and diet quality. DESIGN: Unbalanced randomized controlled trial conducted in February to May 2009 with participants assigned to NRF education group (n=128) or control group receiving standard nutrition education (n=61). PARTICIPANTS/SETTING: Adult primary food shoppers and preparers with at least one child in the household aged 3 to 17 years. INTERVENTION: Group education session and support tools (pocket guide, shopping list, refrigerator magnet, weekly e-mail messages, and biweekly mailings). MAIN OUTCOME MEASURES: Surveys of knowledge, attitudes, and behaviors and two 24-hour telephone dietary recalls at baseline and after an 8-week intervention period. STATISTICAL ANALYSES: Examined time-by-treatment interactions in outcome measures. RESULTS: Compared to controls, NRF participants increased meal planning (+24.2% vs ?4.9%; P<0.01), ability to identify nutrient-rich foods (+60.2% vs +24.6%; P<0.001), and use of shopping lists (+14.1% vs +3.3%; nonsignificant trend), and consumed more vegetables and fruits (P<0.05). NRF participants improved overall diet quality as shown by their scores on the Healthy Eating Index (P=0.04) and NRF scale scores (nonsignificant trend). Significant improvements were observed in Healthy Eating Index component scores for total fruit; whole fruit; whole grains; saturated fat; and energy from solid fats, alcohol, and added sugars. CONCLUSIONS: Findings of this study showed that a consumer education program increased participants' use of the NRF approach and improved diet quality. Larger and longer-term studies are needed to confirm the findings and better understand processes of change.

Analysis of the relationship between economic measures and Salmonella testing results in young chicken slaughter establishments.

Food processing establishments incur costs to install, maintain, and operate equipment and implement specific food safety practices. During times of economic recession, establishments might reduce their food safety efforts to conserve resources and reduce costs of operation. This study was conducted to determine whether financial performance measures are systematically associated with Salmonella test results. The association between Salmonella test results from 182 federally inspected young chicken slaughter establishments from 2007 to 2009 and financial performance was examined while controlling for other establishment characteristics. Results indicated that the smallest establishments, which slaughtered fewer than 0.2 million chickens per year, had three times as many positive test results as did the largest establishments, which slaughtered more than 86.0 million chickens per year (P < 0.01). Establishments that slaughtered more than 0.2 million but fewer than 18.5 million chickens had 1.5 times as many positive test results (P = 0.02). Two statistically significant financial performance measures were identified, but the effects were limited. Establishments in bankruptcy had 1.4 times as many positive test results as did those not in bankruptcy (P = 0.02); however, only five establishments were in bankruptcy. Establishments with better payment performance generally had better Salmonella test results, but the effect was significant only in the winter season.

Validation of a research case definition of Gulf War illness in the 1991 US military population.

BACKGROUND: A case definition of Gulf War illness with 3 primary variants, previously developed by factor analysis of symptoms in a US Navy construction battalion and validated in clinic veterans, identified ill veterans with objective abnormalities of brain function. This study tests prestated hypotheses of its external validity. METHODS: A stratified probability sample (n = 8,020), selected from a sampling frame of the 3.5 million Gulf War era US military veterans, completed a computer-assisted telephone interview survey. Application of the prior factor weights to the subjects' responses generated the case definition. RESULTS: The structural equation model of the case definition fit both random halves of the population sample well (root mean-square error of approximation = 0.015). The overall case definition was 3.87 times (95% confidence interval, 2.61-5.74) more prevalent in the deployed than the deployable nondeployed veterans: 3.33 (1.10-10.10) for syndrome variant 1; 5.11 (2.43-10.75) for variant 2, and 4.25 (2.33-7.74) for variant 3. Functional status on SF-12 was greatly reduced (effect sizes, 1.0-2.0) in veterans meeting the overall and variant case definitions. CONCLUSIONS: The factor case definition applies to the full Gulf War veteran population and has good characteristics for research.