To address the widening disparity between Whites and non-Whites for influenza vaccination rates, this study employed the Health Belief Model to examine these rates in five racial ethnic groups (White, Latino, African American, Filipino American, and Japanese American) to identify modifiable determinants of vaccination by race/ethnicity. A 2004 telephone survey of parishioners of faith-based congregations aged 50-75 years in Los Angeles and Honolulu assessed influenza vaccination rate, perceived susceptibility to influenza, perceived severity of illness, and the self-reported main barrier to influenza vaccination. Logistic regression models for each race/ethnic group predicting vaccination dependent upon perceived susceptibility to influenza, perceived severity of illness, and sociodemographic characteristics were estimated. Model parameters were used to generate standardized predictions of vaccination rates by race/ethnic group. In the multivariate models, Whites and African Americans who were very concerned about getting the flu were significantly more likely to be vaccinated (96% and 91%, respectively), compared with those who were not concerned (45% and 33%). However, vaccination rates among Latinos who were very concerned about getting the flu (54%), although significantly higher than Latinos who were not concerned (34%), were lower than for Whites and African Americans. Examination of the main barriers to vaccination revealed that Latinos were more likely to report access and cost barriers, while African Americans were more likely to raise issues of mistrust such as concern that the vaccine causes influenza. Distinct barriers to influenza vaccination exist among racial/ethnic groups. Vaccination programs may benefit from addressing these specific and unique concerns.

Polypropylene (PP)‐clay nanocomposites were obtained and studied by using three different coupling agents, glycidyl methacrylate (GMA), acrylic acid (AA), and maleic anhydride (MA). Three different clays, natural montmorillonite (Cloisite Na+) and chemically modified clays Cloisite 20A and Cloisite 30B, have also been used. Nanocomposites were prepared by melt‐blending in a twin‐screw extruder using two mixing methods: two‐step mixing and one‐step mixing. The relative influence of each factor was observed from structural analysis by WAXD, POM, TEM, and mechanical properties. The results were analyzed in terms of the effect of each compatibilizing agent and incorporation method in the clay dispersion and mechanical properties of the nanocomposite. Experimental results showed that clay dispersion and interfacial adhesion are greatly affected by the kind of matrix modification. The polarity and reactivity of polar groups give as a result better interfacial adhesion and subsequent mechanical performance. PP‐g‐GMA and PP‐g‐MA were better compatibilizing agents than PP‐g‐AA. Better dispersion and exfoliation for the nanoclays were obtained when using two‐step mixing than one‐step mixing conditions. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4748–4756, 2006

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Despite initial perceived cost savings associated with generic CsA, de novo renal transplant recipients incurred greater total healthcare costs than those treated with branded CsA. Patients receiving generic CsA may need higher doses or other immunosuppressants to maintain the transplanted kidney than patients receiving branded CsA. Providers and payers need to be aware of potential differences in total healthcare costs between formulations of bioequivalent critical-dose drugs to make the best choice for patient care.