IMPORTANCEBecause transmission of ocular strains of Chlamydia trachomatis is greatest among preschool-aged children, limiting azithromycin distributions to this age group may conserve resources and result in less antimicrobial resistance, which is a potential advantage in areas with hypoendemic trachoma and limited resources. OBJECTIVE To determine the efficacy of mass azithromycin distributions to preschool-aged children as a strategy for trachoma elimination in areas with hypoendemic disease. DESIGN, SETTING, AND PARTICIPANTS In this cluster randomized clinical trial performed from November 23, 2014, until July 31, 2017, thirty rural communities in Niger were randomized at a 1:1 ratio to biannual mass distributions of either azithromycin or placebo to children aged 1 to 59 months. Participants and study personnel were masked to treatment allocation. Data analyses for trachoma outcomes were performed from October 19, 2021, through June 10, 2022. INTERVENTIONS Every 6 months, a single dose of either oral azithromycin (20 mg/kg using heightbased approximation for children who could stand or weight calculation for small children) or oral placebo was provided to all children aged 1 to 59 months. MAIN OUTCOMES AND MEASURES Trachoma was a prespecified outcome of the trial, assessed as the community-level prevalence of trachomatous inflammation-follicular and trachomatous inflammation-intense through masked grading of conjunctival photographs from a random sample of 40 children per community each year during the 2-year study period. A secondary outcome was the seroprevalence of antibodies to C trachomatis antigens. RESULTS At baseline, 4726 children in 30 communities were included; 1695 children were enrolled in 15 azithromycin communities and 3031 children were enrolled in 15 placebo communities (mean [SD] proportions of boys, 51.8% [4.7%] vs 52.0% [4.2%]; mean [SD] age, 30.8 [2.8] vs 30.6 [2.6]months). The mean coverage of study drug for the 4 treatments was 79% (95% CI, 75%-83%) in the azithromycin group and 82% (95% CI, 79%-85%) in the placebo group. The mean prevalence of trachomatous inflammation-follicular at baseline was 1.9% (95% CI, 0.5%-3.5%) in the azithromycin group and 0.9% (95% CI, 0-1.9%) in the placebo group. At 24 months, trachomatous inflammation-follicular prevalence was 0.2% (95% CI, 0-0.5%) in the azithromycin group and 0.8% (95% CI, 0.2%-1.6%) in the placebo group (incidence rate ratio adjusted for baseline: 0.18 [95% CI, 0.01-1.20]; permutation P = .07).

BackgroundDespite known racial disparities in advance care planning (ACP), little is known about ACP disparities experienced by US immigrants.MethodsWe used data from the 2016 wave of the Health and Retirement Study. We defined ACP engagement as self‐reported end‐of‐life (EOL) discussions, designation of a power of attorney (DPOA), documented living will, or “any” of the three behaviors. Immigration status was determined by respondent‐reported birth outside the United States. Time in the United States was calculated by subtracting the year of arrival in the United States from the survey year of 2016. We used multivariable logistic regression to estimate the association between ACP engagement and immigration status and the relationship of acculturation to ACP engagement, adjusting for sociodemographics, religiosity, and life expectancy.ResultsOf the total cohort (N = 9928), 10% were immigrants; 45% of immigrants identified as Hispanic. After adjustment, immigrants had significantly lower adjusted probability of any ACP engagement (immigrants: 74% vs. US‐born: 83%, p < 0.001), EOL discussions (67% vs. 77%, p < 0.001), DPOA designation (50% vs. 59%, p = 0.001) and living will documentation (50% vs. 56%, p = 0.03). Among immigrants, each year in the United States was associated with a 4% increase in the odds of any ACP engagement (aOR 1.04, 95% CI 1.03–1.06), ranging from 36% engaged 10 years after immigration to 78% after 70 years.ConclusionACP engagement was lower for US immigrants compared to US‐born older adults, particularly for those that recently immigrated. Future studies should explore strategies to reduce disparities in ACP and the unique ACP needs among different immigrant populations.