Differences in incidence and survival of oral cavity and pharyngeal cancers between Germany and the United States depend on the HPV-association of the cancer site.

INTRODUCTION: The epidemiology of squamous cell oral cavity and pharyngeal cancers (OCPC) has changed rapidly during the last years, possibly due to an increase of human papilloma virus (HPV) positive tumors and successes in tobacco prevention. Here, we compare incidence and survival of OCPC by HPV-relation of the site in Germany and the United States (US). MATERIALS AND METHODS: Age-standardized and age-specific incidence and 5-year relative survival was estimated using data from population-based cancer registries in Germany and the US Surveillance Epidemiology and End Results (SEER) 13 database. Incidence was estimated for each year between 1999 and 2013. Relative survival for 2002-2005, 2006-2009, and 2010-2013 was estimated using period analysis. RESULTS: The datasets included 52,787 and 48,861 cases with OCPC diagnosis between 1997 and 2013 in Germany and the US. Incidence was much higher in Germany compared to the US for HPV-unrelated OCPC and more recently also for HPV-related OCPC in women. Five-year relative survival differences between Germany and the US were small for HPV-unrelated OCPC. For HPV-related OCPC, men had higher survival in the US (62.1%) than in Germany (45.4%) in 2010-2013. These differences increased over time and were largest in younger patients and stage IV disease without metastasis. In contrast, women had comparable survival for HPV-related OCPC in both countries. CONCLUSIONS: Strong survival differences between Germany and the US were observed for HPV-related OCPC in men, which might be explained by differences in HPV-attributable proportions. Close monitoring of the epidemiology of OCPC in each country is needed.

[HPV vaccination coverage in German girls: results of the KiGGS study: first follow-up (KiGGS Wave 1)]. / Impfstatus und Determinanten der Impfung gegen humane Papillomviren (HPV) bei Mädchen in Deutschland : Ergebnisse der KiGGS-Studie - Erste Folgebefragung (KiGGS Welle 1).

OBJECTIVES: In Germany, vaccination against HPV infection has been recommended for girls aged 12-17 years since 2007. The aim of this paper was to provide an overview of the current status and determinants of HPV vaccination uptake in Germany. METHODS: Analyses included data from 14- to 17-year-old girls (n =1,337) of the German Health Interview and Examination Survey for Children and Adolescents - First Follow-up Survey (KiGGS Wave 1). Standardized telephone interviews included questions for girls on the number of HPV vaccine doses and visits to a gynecologist. Parents were asked about their socioeconomic status (SES) and the girls' participation in the J1 adolescent health check-up. Descriptive analyses of the HPV vaccination status with respect to social, demographic, and health-care utilization factors were performed. Factors associated with vaccination were identified and odds ratios (OR) were estimated by means of logistic regression analysis. RESULTS: The prevalence of vaccination with at least one HPV vaccine dose was 52.6% (95% confidence interval 48.5-56.6). Three-dose HPV vaccination coverage was 39.5% (35.3-43.9). Vaccine uptake increased with age, was higher in girls with middle and low SES compared with high SES, with residence in eastern Germany, in those who had already seen a gynecologist, and who participated in the J1. Multivariable logistic regression revealed a twofold increased chance of being vaccinated for girls with middle SES (OR 1.9) compared with high-SES girls and for those who had yet seen a gynecologist (OR 2.1). CONCLUSIONS: School-based vaccination programs and multi-tier vaccination campaigns have led to high vaccination rates in some European and non-European countries. In Germany, however, such high vaccination rates have not been achieved. To fully realize the potential of HPV vaccinations to reduce HPV-related cancer incidence at the population level, vaccination coverage in Germany must be increased. In absence of school-based vaccination programs, medical doctors should use each visit to check and complete the girl's vaccination status.