Increasing the Uptake of HIV Testing among Men in Tanzania: A Novel Intervention for Bar Patrons.

We investigated a novel community-based HIV testing and counseling (HTC) strategy by recruiting men from bars in northern Tanzania in order to identify new HIV infections. All bars in the town of Boma Ng'ombe were identified and male patrons were systematically invited to participate in a health study. HIV testing was offered to all enrolled participants. Outputs included HIV test yield, cost per diagnosis, and comparison of our observed test yield to that among male patients contemporaneously tested at five local facility-based HTC. We enrolled 366 participants and identified 17 new infections - providing a test yield of 5.3% (95% Confidence interval [CI] 3.3-8.4). The test yield among men contemporaneously tested at five local HTC centers was 2.1% (95% CI 1.6-2.8). The cost-per-diagnosis was $634. Our results suggest that recruiting male bar patrons for HIV testing is efficient for identifying new HIV infections. The scalability of this intervention warrants further evaluation.

RESUMEN: Investigamos una novedosa estrategia comunitaria de asesoramiento y pruebas de VIH (HTC) reclutando hombres de los bares del norte de Tanzania para identificar nuevas infecciones de VIH. Se identificaron todos los bares de la ciudad de Boma Ng'ombe y se invitó sistemáticamente a los clientes varones a participar en un estudio de salud. Se ofrecieron pruebas de VIH a todos los participantes inscritos. Los resultados incluyeron los resultados de las pruebas de VIH, el costo por diagnóstico y la comparación de nuestros resultados observados con los de los pacientes varones que simultáneamente se sometieron a pruebas en cinco centros locales de HTC. Se inscribieron 366 participantes y se identificaron 17 nuevas infecciones, proporcionando un resultado en las pruebas del 5.3% (intervalo de confianza [IC] del 95%: 3.3-8.4). Los resultados de las pruebas realizadas simultáneamente en cinco centros locales de HTC fue del 2.1% (IC del 95%: 1.6-2.8). El costo por diagnóstico fue de $634. Nuestros resultados sugieren que el reclutamiento de clientes masculinos para las pruebas de VIH fue eficiente para identificar nuevas infecciones de VIH. La escalabilidad de esta intervención merece una evaluación adicional.

Reciprocity of exposure time and irradiance on energy density during photoradiation on wound healing in a murine pressure ulcer model.

BACKGROUND: Energy density and exposure time reciprocity is assumed and routinely used in low-level light therapy (LLLT) regimens. This study examined dose reciprocity effects on wound healing. METHODS: Pressure ulcers were created on seven groups of C57/BL mice (n = 18). Photoradiation was administered (18 days; 5 J/cm(2)/day @ 670 nm) using a custom LED apparatus and treatment matrix varying both intensity and exposure. Control animals were treated similarly, without photoradiation. Ulcer staging was performed using a standardized scale. Changes in stage, wound area and wound closure rates were measured. Histology was performed. RESULTS: Photostimulatory effects at day 7 occurred with parameters of 125 seconds @ 40 mW x 1/day; 625 seconds @ 8 mWx1/day; 62.5 seconds @ 40 mWx2/day; and 312.5 seconds @ 8 mWx2/day; and at day 18 using 625 seconds @ 8 mW and 312.5 seconds @ 8 mWx2/day. Statistically significant increases in wound closure rates occurred using 625 seconds @ 8 mW; 62.5 seconds @ 40 mWx2/day; and 312.5 seconds @ 8 mWx2/day treatments. Mean ulcer grade scores were similar to controls. CONCLUSIONS: Varying irradiance and exposure time to achieve a specified energy density affects phototherapy outcomes in this model. Variation of exposure time and irradiance may account for conflicting results in the literature. Further studies of these effects are warranted.