Catch-up HPV vaccination status of adolescents in relation to socioeconomic factors, individual beliefs and sexual behaviour

Influences of HPV disease perceptions, vaccine accessibility, and information exposure on social media on HPV vaccination uptake among 11,678 mothers with daughters aged 9-17 years in China: a cross-sectional study

BACKGROUND

Mothers play a crucial role in influencing their daughters' HPV vaccination decisions. Addressing barriers to receiving HPV vaccination among mothers of girls may achieve two goals in one strike: increasing vaccination coverage among both mothers and their daughters. This study aims to examine the HPV vaccination uptake and its determinants among mothers of girls in China at both the individual and interpersonal levels.

METHODS

From July to October 2023, a cross-sectional online study was conducted to investigate HPV vaccine refusal for daughters aged 9-17 years among 11,678 mothers in Shenzhen, China. A randomized selection method was employed, targeting 11 primary schools and 13 secondary schools in Shenzhen. The research team invited mothers of girls to participate in an anonymous online survey. Multilevel logistic regression models (level 1: schools; level 2: individual participants) were employed to analyze the data.

RESULTS

Among 11,678 mothers, 41.1% self-reported receiving at least one dose of HPV vaccination. Through multilevel logistic regression analysis, eight items measuring illness representations of HPV, which refers to how people think about HPV, were associated with higher HPV vaccination uptake (AOR: 1.02-1.14). These items included identity (identifying symptoms of HPV), timeline (whether HPV is acute/chronic), negative consequences, personal and treatment control (whether HPV is under volitional control), concern, negative emotions, and coherence (overall understanding of HPV). In addition, participants refusing HPV vaccines for the index daughters (AOR: 0.82, 95%CI: 0.76, 0.89) had lower vaccine uptake. Perceived more difficulties in accessing the 9-valent vaccines (AOR: 1.06, 95%CI: 1.04, 1.08) and more satisfaction with vaccine-related promotional materials (AOR: 1.50, 95%CI: 1.46, 1.54) at the individual level were associated with higher vaccine uptake. At the interpersonal factors, higher frequency of exposure to testimonials given by others about HPV vaccination on social media (AOR: 1.19, 95%CI: 1.14, 1.25) and thoughtful consideration of the veracity of the information (AOR: 1.11, 95%CI: 1.07, 1.16) were correlated with higher HPV vaccination uptake.

CONCLUSIONS

These findings offer essential implications for modifying HPV disease perceptions, addressing difficulties in accessing the 9-valent HPV vaccines, and enhancing health communication needs to improve HPV vaccine uptake among mothers of girls.

Factors influencing human papillomavirus vaccination uptake in European women and adolescents: A systematic review and meta-analysis

OBJECTIVE

Cervical Cancer (CC) lingers as a severe public health issue due to low vaccination coverage and poor screening addressability. Hence, this systematic review explored psychological factors influencing the Human Papilloma Virus (HPV) vaccination uptake in European women.

METHODS

As of September 2022, PubMed, EMBASE, Scopus, and Web of Science were systematically searched to include English studies assessing diverse factors influencing vaccination uptake in European women. Only studies comparing vaccinated with unvaccinated women were included. Quality assessment, publication attrition assessment, and sensitivity analyses were performed.

RESULTS

Eighteen studies were included, totaling a population of 18,611 participants. Results indicated that knowledge about HPV infection could positively influence vaccination rates with an Odds Ratio (OR) of 1.82 and a confidence interval (CI) between 1.27 and 2.61, showing statistical significance at a Z value of 3.24 with a p-value of 0.001. Neither knowledge about HPV vaccination (OR = 1.39, CI: 0.73-2.65, Z = 1.01, p = 0.31) nor knowledge about CC screening (OR = 1.05, CI: 0.55-1.98, Z = 0,14, p = 0.89) seem to affect vaccination rates. Regardless, intention to undertake CC screening (CCS) showed an OR = 1.68 in favor of the group intending to perform it, with a CI between 1.37 and 2.07, showing statistical significance at a Z = 4.94 and p = 0.00001. Other aspects affecting vaccination uptake were fear of side effects, insufficient information, and belief that chances of being infected are low.

CONCLUSIONS

Results demonstrated that diverse aspects could affect the vaccination intent, while personalized interventions focusing on population and country characteristics need to be assembled to mitigate vaccination coverage.

Acceptability of HPV Vaccination in Young Students by Exploring Health Belief Model and Health Literacy

Evidence on the human papillomavirus (HPV) vaccine shows that it is effective in reducing the burden of HPV-related diseases. For more than 15 years the HPV vaccine has been offered free of charge in Italy to girls from the age of 12. Over time, the free offer of the HPV vaccine has also been extended to boys and to young adults at risk of developing HPV lesions. Despite the HPV vaccine’s effectiveness and availability, vaccination coverage is low in Italy, with a reported value of 46.5% in 2020. Furthermore, in the southern administrative regions, vaccination coverage is even lower than national values, with 25.9% coverage in Sicily. A cross-sectional study was conducted among university and high school students in the Palermo area (Sicily, Italy) in order to identify the determinants of HPV vaccination adherence by using a questionnaire that investigated factors of HPV vaccine practice. The study explored the behavioral attitude by using the Health Belief Model (HBM), and also used the SILS test and the METER test to investigate the level of health literacy (HL). Overall, 3,073 students were enrolled, and less than a third reported they had completed the vaccination schedule (n = 925, 30.1%). Multivariable analysis showed that the factors directly associated with the adherence to HPV vaccination were female sex (OR = 4.43, p < 0.001), high HBM total score (OR = 4.23, p < 0.001), good HL level (OR = 1.26, p = 0.047), parents (OR = 1.78, p = 0.004), general practitioner (OR = 1.88, p = 0.001), and educational material provided by public vaccination services (OR = 1.97, p = 0.001) as HPV vaccine information sources. Further health-promotion programs focused on improving HL and perception of the HPV vaccine’s benefits should be implemented in order to achieve the desirable 95% vaccination coverage.

Factors influencing adolescents' healthy pregnancy preparation behavior: a cross-sectional gender comparison applying the health belief model

BACKGROUND

Interventions to prepare for a healthy pregnancy from an early age can ensure the health of both mother and child. This study aims to compare the factors associated with healthy pregnancy preparation behavior (HPPB) among male and female adolescents.

METHODS

A total of 690 Korean adolescents participated in this cross-sectional study from July 11 to August 24, 2018. Determinants of the likelihood of engaging in HPPB were described using hierarchical regression about the importance of and confidence in HPPB, the gender equality related to pregnancy and birth, and the health belief model (HBM) constructs about HPPB.

RESULTS

Smoking experience (β = - 0.18, p < 0.001 for boys, β = - 0.25, p < 0.001 for girls), and HBM constructs were identified as factors correlated with HPPB in both genders. The significant factors in boys were perceived susceptibility (β = - 0.13, p = 0.005), perceived severity (β = 0.12, p = 0.015), perceived benefits (β = 0.23, p < 0.001), and perceived barriers (β = - 0.18, p < 0.001), whereas the corresponding factors in girls were perceived severity (β = 0.20, p = 0.001), and perceived barriers (β = - 0.23, p < 0.001). The importance of HPPB was identified as a factor only among girls (β = 0.19, p = 0.005), while confidence in HPPB (β = 0.12, p = 0.401), gender equality related to pregnancy and childbirth (β = - 0.20, p = 0.001 for women's responsibility variable, β = 0.14, p = 0.018 for men's responsibility variable), and alcohol (β = - 0.10, p = 0.022) were factors identified only among boys.

CONCLUSIONS

The gender differences in opinions on HPPB identified in this study can help nurses and community health care professionals recognize issues for which they can develop and implement preventive interventions. For healthy pregnancy preparation, interventions based on HBM constructs and smoking should be presented for both male and female adolescents. Imparting education to females on the importance of HPPB and to males on confidence in HPPB, gender equality related to pregnancy and childbirth, and alcohol consumption, should be emphasized. In addition, as perceived susceptibility may be low in a disease prevention model using the health belief model, it is necessary to prioritize increasing the perceived susceptibility of school-age children as an intervention.

Barriers towards HPV Vaccinations for Boys and Young Men: A Narrative Review

Background: HPV vaccination of both girls and boys can protect against infection and eliminate the risk for HPV-associated cancer. Due to a common misconception that the virus only poses risks to women, vaccine coverage is suboptimal among men in many countries. It is urgent to identify barriers to vaccination of boys and men. Methods: We conducted a narrative review of publications examining attitudes and beliefs regarding HPV vaccination for boys and young men. The electronic databases searched were PubMed, PsychInfo and Scopus (December 2020; last update July 2021). A total of 103 original articles were included in the final analysis. Results: The central barriers against vaccination of boys and men are: (1) lack of knowledge, (2) vaccine hesitancy in general, (3) lack of recommendation from and/or discussions with healthcare providers, (4) cost and logistics, and (5) the idea that HPV vaccination may promote promiscuity. Men who have sex with men and families belonging to ethnic minorities express a need for information tailored to their situation. Conclusions: Boys should be included in national immunization programs and men should also be offered catch-up vaccinations. Future studies should focus on addressing vaccine hesitancy and developing interventions to promote pan-gender HPV vaccination.

Longitudinal assessment of nonavalent vaccine HPV types in a sample of sexually active African American women from ten U.S. Cities

BACKGROUND

Chronic infection with high-risk human papillomavirus is a necessary cause for cervical carcinogenesis. This study examined prevalence of nonavalent vaccine preventable HPV types over four months among sexually active women in the United States.

METHODS

This sub-study obtained meta-data for 80 of the 1,365 women (18-25 years), enrolled in the BRAVO study, a randomized, open-label trial of home screening and treatment of asymptomatic bacterial vaginosis at high-risk for sexually transmitted infections conducted between 2008 and 2013. Participants were randomized to treatment or standard-of-care, and followed every 2-months for 12 months. Stored vaginal swabs from the first three visits were tested for the nine vaccine preventable HPV types using quantitative PCR. Prevalence and associated 95% confidence intervals for the HPV types were assessed using R (version 3.6.1).

RESULTS

The average age of the participants was 21.5 (SD ± 2.11) years, with 60% having ever been pregnant and all were African-American. Majority (71%) reported ≥ two sex partners in the prior year with 89% having unprotected vaginal sex and 45% having a new sex partner in the prior year. About 30% had ≥ one of the nine nonavalent vaccine HPV types at all three time points over a period of four months, 15% at two of any three visits, 19% at one of the three visits and 36% were negative for all nine vaccine HPV types at all time points. The most frequently detected HPV vaccine types were 52, 58, 16, and 18. The prevalence of any vaccine HPV types, and high-risk HPV types was 63.8% and 58.8%, respectively.

CONCLUSIONS

Our findings suggest that HPV vaccination which is currently recommended for all unvaccinated persons through age 26 years, is likely to be more beneficial than previously thought as nonavalent HPV vaccine was not available during the time these data were collected.

Sociodemographic Correlates of Human Papillomavirus Vaccine Uptake: Opportunistic and Catch-Up Vaccination in Norway

Simple Summary

HPV vaccination protects against virus that may cause cervical cancer. Opportunistic HPV vaccination (i.e., vaccination at a citizens’ own initiative and cost) has been available in Norway since the first HPV vaccine was licensed in 2006. A routine HPV vaccination program targeting 12-year-old girls was introduced in 2009. A delayed catch-up vaccination program was initiated in 2016, offering HPV vaccination free-of-charge to women born in 1991 and later who had not previously been vaccinated in the routine program. The aim of this study was to assess sociodemographic correlates of opportunistic and catch-up HPV vaccine uptake among women in Norway. We found inequalities in both self-paid opportunistic and free-of-charge catch-up HPV vaccine uptake among adolescents and adult women, with particularly low uptake among women with two immigrant parents and among women with a low household income.

Abstract

Achieving equity in human papillomavirus (HPV) vaccination has high priority. In this nationwide registry-based study, we aimed to investigate sociodemographic correlates of HPV vaccine uptake among women who were vaccinated opportunistically at their own initiative and cost during October 2006–June 2018, and among women who were vaccinated free-of-charge in a catch-up vaccination program during November 2016–June 2018. For 840,328 female residents born in Norway between 1975 and 1996, we retrieved HPV vaccination and sociodemographic data from national registries. We used separate models to analyze the sociodemographic correlates of the initiation and completion of HPV vaccination in opportunistic and catch-up vaccination settings. Overall initiation rate for opportunistic HPV vaccination was 2.2%. Uptake increased consistently with birth year, maternal education level, and household income. Having two immigrant parents or a mother working in a lower prestige occupation was strongly associated with low opportunistic vaccination uptake. Similar but weaker inequities were observed in catch-up HPV vaccination. Initiation rate during the first 20 months of the catch-up program was 46.2%. Completion rate was 72.1% and 73.0% for opportunistic or catch-up vaccination, respectively, with small inequities. In conclusion, HPV vaccine uptake was strongly associated with sociodemographic background both in opportunistic and catch-up vaccination settings, with particularly low uptake associated with having two immigrant parents and low household income.

Time trends in HPV vaccination according to country background: a nationwide register-based study among girls in Norway

Background

Since the human papillomavirus (HPV) vaccine was introduced in Norway in 2009, the vaccine uptake has increased. Whether this increase is similar regardless of the girls’ country background is unknown. We examined changes in HPV vaccine uptake from 2009 to 2014 and studied the impact of parental education and income on HPV vaccine uptake according to country background.

Methods

Girls in the first six birth cohorts (1997–2002) eligible for HPV vaccination were identified through the National Registry. Information on HPV vaccination, country background and socioeconomic factors was extracted from the Norwegian Immunisation Registry and Statistics Norway. Risk differences (RDs) and confidence intervals (CIs) were estimated with linear binomial regression. A total of 177,387 girls were included in the study.

Results

The HPV vaccine uptake increased from 72.5% in 2009 to 87.3% in 2014. The uptake increased for girls in all country background categories. Highest vaccine uptake was observed in girls with East−/South-East Asian background, 88.9% versus 82.5% in the total population. Vaccine uptake decreased slightly with increasing parental education, RD = − 1.6% (95% CI: − 2.3% to − 0.8%) for highest compared with lowest education level. In contrast, the uptake increased with increasing household income, RD = 4.9% (95% CI, 4.3 to 5.5%) for highest compared with lowest quintile. Parental education had largest impact in girls with Asian background, RD = − 8.1% (95% CI − 10.5% to − 5.6%) for higher vs lower education. The largest impact of household income was observed in girls with background from Middle East/Africa, RD for a 200,000 NOK increase in income was 2.1% (95% CI 1.2 to 3.0%).

Conclusions

The HPV vaccine uptake differed with country background but increased over time in all country background categories. Moreover, the impact of education and income on vaccine uptake differed with country background.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-021-10877-8.

The impact of socioeconomic status on HPV infection among young Brazilians in a nationwide multicenter study

The aim of this study is to evaluate genital human papillomavirus (HPV) infection according to socioeconomic categories in Brazil. This cross-sectional, nationwide study included 7,694 sexually active women and men aged 16-25 years. Individuals of all socioeconomic groups in all 26 Brazilian capitals and the Federal District were enrolled through public primary care units between September 2016 and November 2017. All participants answered a standardized interview administered by trained primary care health professionals. Socioeconomic class was analyzed using a pricing classification system for the Brazilian public that divides the market exclusively in terms of economic class based on the ownership of assets and the education level. Cervical samples were obtained using a Digene® HC2 DNA Collection, and penile/scrotum samples were obtained using a wet Dacron swab. HPV typing (overall and high-risk) was performed in a central lab. Of the 7,694 participants (47.85% women), 17.92% belonged to class A-B, 56.08% to class C, and 26.00% to class D-E. The prevalence of overall HPV was similar among the social classes: 51.16% for classes A-B, 53.39% for class C, and 55.47% for classes D-E (P = 0.479). Similar results were found for high-risk HPV. After adjustments, the presence of HPV in individuals with a brown skin color belonging to classes A-B was 57.00% higher [prevalence ratio 1.57 (95%: 1.23, 2.01)] than that in whites and had no impact on the other social classes. In conclusion, HPV infection affects all socioeconomic classes in Brazil, evidencing the importance of offering the HPV vaccine to the entire population.

Knowledge, Perceptions, and Uptake of the Human Papillomavirus Vaccine in a Sample of US High School Adolescents

OBJECTIVE

To assess high school students' knowledge and perceptions of human papillomavirus (HPV) and HPV vaccines and evaluate high school students' self-reported uptake of the HPV vaccine.

METHODS

This was an observational, descriptive study using a 44-question survey. Participants were ninth grade students in a Colorado public school district. The survey was administered as part of a health education course.

RESULTS

Ninety-two surveys were included in the analysis. Demographic characteristics included 64/92 (69.6%) male and 55/92 (59.8%) Hispanic/Latino students. There was no difference between males and females regarding self-reported vaccination status. Non-Hispanic students were 71.6% less likely to have received the HPV vaccine than Hispanic students (OR 0.284; 95% CI, 0.088–0.920; p = 0.036). The average score on the knowledge section was 42.7% with a standard deviation of 22.6%. When assessing students' perceptions, 71/92 (77.2%) disagreed or strongly disagreed that they felt at risk for getting an HPV infection. There was no significant difference between males and females regarding awareness of the HPV vaccine (p = 0.14). More than half of students (58.7%) did not know if they had received the HPV vaccine.

CONCLUSION

HPV vaccine awareness was low and many students did not know if they had received the HPV vaccine. Ninth grade students did not have accurate knowledge of HPV and HPV vaccines and this study presents opportunities for increased education.

Serum and cervicovaginal IgG immune responses against α7 and α9 HPV in non-vaccinated women at risk for cervical cancer: Implication for catch-up prophylactic HPV vaccination

BACKGROUND

Cervical cancer associated with high risk-human papillomavirus (HR-HPV) infection is becoming the one of the most common female cancer in many sub-Saharan African countries. First-generation immigrant African women living in Europe are at-risk for cervical cancer, in a context of social vulnerability, with frequent lack of cervical cancer screening and HPV vaccination.

OBJECTIVE

Our objective was to address immunologically the issue of catch-up prophylactic HPV vaccination in first-generation African immigrant women living in France.

METHODS

IgG immune responses and cross-reactivities to α7 (HPV-18, -45 and -68) and α9 (HPV-16, -31, -33, -35, -52 and -58) HPV types, including 7 HR-HPV targeted by the Gardasil-9® prophylactic vaccine, were evaluated in paired serum and cervicovaginal secretions (CVS) by HPV L1-virus-like particles-based ELISA. Genital HPV were detected by multiplex real time PCR (Seegene, Seoul, South Korea).

RESULTS

Fifty-one immigrant women (mean age, 41.7 years; 72.5% HIV-infected) were prospectively included. More than two-third (68.6%) of them carried genital HPV (group I) while 31.4% were negative (group II). The majority (90.2%) exhibited serum IgG to at least one α7/α9 HR-HPV. Serum HPV-specific IgG were more frequently detected in group I than group II (100% versus 68.7%; P = 0.002). The distribution of serum and genital HPV-specific IgG was similar, but mean number of IgG reactivities to α7/α9 HR-HPV was higher in serum than CVS (5.6 IgG per woman in serum versus 3.2 in CVS; P<0.001). Rates of IgG cross-reactivities against HPV different from detected cervicovaginal HPV were higher in serum and CVS in group I than group II. Finally, the majority of groups I and II women (68.6% and 68.7%, respectively) exhibited serum or cervicovaginal IgG to Gardasil-9® HR-HPV, with higher mean rates in group I than group II (6.1 Gardasil-9® HR-HPV per woman versus 1.4; P<0.01). One-third (31.2%) of group II women did not show any serum and genital HPV-specific IgG.

CONCLUSIONS

Around two-third of first-generation African immigrant women living in France showed frequent ongoing genital HPV infection and high rates of circulating and genital IgG to α7/α9 HPV, generally cross-reacting, avoiding the possibility of catch-up vaccination. Nevertheless, about one-third of women had no evidence of previous HPV infection, or showed only low levels of genital and circulating HR-HPV-specific IgG and could therefore be eligible for catch-up vaccination.

HPV knowledge and vaccine acceptance among European adolescents and their parents: a systematic literature review

BACKGROUND

Since the introduction of HPV vaccines, several studies have been conducted in different countries to assess HPV knowledge and vaccine acceptance. The aim of this study was to perform a systematic literature review to summarize results and identify factors associated with HPV knowledge and vaccine acceptance in adolescents and their parents and to compile the measurement tools used in the published research studies performed in European countries where HPV is licensed.

METHODS

A systematic literature review was conducted for studies published between January 1st 2006 and December 31st 2017.

RESULTS

Seventy non-interventional studies performed in 16 European countries met the inclusion criteria. Thirty-eight of them reported data on HPV knowledge and 40 reported data on HPV vaccine acceptance. Further, 51.8% of adolescents (range 0% to 98.6%) and 64.4% of parents (range 1.7% to 99.3%) knew about HPV infection. Insufficient information and safety concerns were the main barriers to vaccination acceptance.

CONCLUSION

HPV knowledge and vaccine acceptance are still modest and vary widely between studies across EU countries. Coordinated efforts should be made to provide the relevant population with information for informed decision-making about HPV vaccination.

Knowledge, Attitudes and Perceptions of Immigrant Parents Towards Human Papillomavirus (HPV) Vaccination: A Systematic Review

Background: Our understanding about knowledge, attitudes and perceptions (KAP) of immigrants regarding human papillomavirus (HPV) vaccine is poor. We present the first systematic review on KAP of immigrant parents towards HPV vaccine offered to their children. Methods: Major bio-medical databases (Medline, Embase, Scopus and PsycINFO) were searched using a combination of keyword and database-specific terms. Following identification of studies, data were extracted, checked for accuracy, and synthesised. Quality of the studies was assessed using the Newcastle Ottawa Scale and the Joanna Briggs Institute Qualitative Assessment tool. Results: A total of 311 titles were screened against eligibility criteria; after excluding 292 titles/full texts, 19 studies were included. The included studies contained data on 2206 adults. Participants’ knowledge was explored in 16 studies and ranged from none to limited knowledge. Attitudes about HPV vaccination were assessed in 13 studies and were mixed: four reported negative attitudes fearing it would encourage sexual activity; however, this attitude often changed once parents were given vaccine information. Perceptions were reported in 10 studies; most had misconceptions and concerns regarding HPV vaccination mostly influenced by cultural values. Conclusion: The knowledge of HPV-related diseases and its vaccine among immigrant parents in this study was generally low and often had negative attitude or perception. A well-designed HPV vaccine health educational program on safety and efficacy of HPV vaccination targeting immigrant parents is recommended.

Do multiple environmental factors impact four cancers in women in the contiguous United States?

BACKGROUND

Though there has been an increasing concern about the effects that environmental exposures have on cancer, limited knowledge exists regarding multiple environmental factors on cancers in women.

METHODS

We performed a spatial autoregressive model to examine the association between the Environmental Quality Index (EQI) and mortalities of four cancers in women (breast, cervical, ovarian and uterine cancer) based on county-level data, and explored these associations by urbanicity. The EQI, which included five domains (air, water, land, built environment and sociodemographic domain) estimated from 2000 to 2005 data, was obtained from the United States Environmental Protection Agency. The mortality rates for 3107 counties in the US in 2014 were obtained from the Institute for Health Metrics and Evaluation.

RESULTS

We found that each unit increase in the overall EQI was positively associated with the increased mortality of breast, ovarian and uterine cancer (2.5%, 3.6% and 3.1% respectively), but was negatively associated with cervical cancer mortality. Among the environmental domains, the air and sociodemographic EQIs were positively associated with increased risks of breast, ovarian and uterine cancers. Additionally, built environment EQI was associated with breast and ovarian cancers; land EQI was associated with uterine and ovarian cancers. The sociodemographic EQI was negatively associated with cervical cancer mortality. Furthermore, we have developed a novel Environmental Quality Health Index (EQHI) in identifying environment-health risk of cancers in women at county level.

CONCLUSIONS

Our findings suggest that breast, ovarian, and uterine cancer mortalities are positively associated with multiple environmental factors, while cervical cancer mortality is mainly negatively associated with sociodemographic factors. The novel EQHI might help identify spatially-based environment-cancer risk.

Knowledge about HPV and vaccination among young adult men and women: Results of a national survey

BACKGROUND

In addition to screening by Pap smears, vaccination against human papillomavirus (HPV) can dramatically reduce cervical cancers caused by the virus. The acceptance of HPV vaccination is directly related to HPV knowledge. This research aimed to evaluate knowledge about HPV and vaccination among men and women aged 16-25 years who use the public health system in Brazil.

METHODS

This was a cross-sectional, multicenter study of sexually active young adults recruited from 119 primary care units between 2016 and 2017. All participants answered a face-to-face standardized questionnaire.

RESULTS

Of 8581 participants, the mean percentage of correct answers about HPV and vaccination was 51.79% (95% CI 50.90-52.67), but 75.91% (95% CI 74.13-77.69) had awareness of the HPV vaccination. Women answered a higher proportion of questions correctly than men did (p = 0.0003). Lower education level was the variable that most interfered with knowledge. The best information sources for knowledge were both health professionals and the media (1.33%, 95% CI 1.03-1.70).

CONCLUSIONS

The results emphasize the importance of educational programs about HPV and vaccination among young adults, especially in socially disadvantaged populations. These findings can help to increase the vaccination rate in the country and to stimulate public health policies.

The vaccinaTion & Hpv Knowledge (THinK) questionnaire: a reliability and validity study on a sample of women living in Sicily (southern-Italy)

Objective

The aim of this study was to introduce the VaccinaTion & Hpv Knowledge (THinK) questionnaire to assess knowledge about human papillomavirus (HPV) and attitude to HPV-vaccination. Its reliability and validity was demonstrated in a sample of women living in Sicily (southern Italy).

Methods

A cross-sectional survey was conducted on a sample of 220 women at the “Paolo Giaccone” University Hospital in Palermo (Sicily), aged 18–61. Data were analyzed through Cronbach’s alpha and exploratory factor analysis, followed by a structural equation model with measurement component. The two-level data structure was explicitly considered.

Results

Three dimensions were found: “knowledge of HPV infection (kHPV), “Attitude to be vaccinated against HPV (aHPV)” and “Knowledge about vaccines (KV)” (97% overall explained variance). Internal consistency was good for the whole questionnaire (0.82) and the first dimension (0.88) and acceptable for the second (0.78) and the third dimension (0.73). 23% of women showed no or little knowledge of HPV and 44.3% of women had no or little knowledge about HPV induced lesions.

Discussion

The use of a validated questionnaire may serve as a useful measure to assess general knowledge about HPV and attitude towards vaccination against HPV in the primary prevention setting.

Human papilloma virus vaccination and attitudes towards contraception: a cross-sectional study

Objective: Human papilloma virus (HPV) vaccination may result in misconceptions that encourage young women to adopt risky contraceptive practices. The purpose of this article was to investigate whether HPV vaccination status was associated with choice of contraceptive method and adoption of risky sexual behaviour. Methods: Vaccinated and non-vaccinated visitors to a university department paediatric and adolescent gynaecology clinic were asked to anonymously fill in a survey comprising questions on sociodemographic characteristics, sexual history, opinions on contraception and attitudes towards contraception. Results: A total of 191 women were studied, 75 (39.3%) of whom had received the HPV vaccination and 116 (60.7%) of whom had not. The main contraceptive methods used in both groups were male condom (46%), emergency contraception (14%) and coitus interruptus (12%). The vaccinated group was less religious and had better educated mothers compared with the non-vaccinated group (relative risk [RR] 0.64; 95% confidence interval [CI] 0.45, 0.93; p = .016 vs RR 1.91; 95% CI 1.01, 3.63; p = .027, respectively). They also had an earlier sexual debut (RR 1.94; 95% CI 1.06, 3.55; p = .015), agreed that vaccination increased the safety of sex (RR 1.45; 95% CI 1.02, 2.05; p = .039) and considered the HPV vaccine a prerequisite to initiation of a sexual relationship (RR 1.87; 95% CI 1.34, 2.63; p < .001). Conclusion: HPV vaccination did not affect sexual behaviour, attitudes to condom use or choice of contraceptive method.

'I also want to be vaccinated!' - adolescent boys' awareness and thoughts, perceived benefits, information sources, and intention to be vaccinated against Human papillomavirus (HPV)

This study investigates boys’ awareness and thoughts about human papillomavirus (HPV) and HPV vaccination, perceived benefits of vaccinating men, information sources and intention to be vaccinated against HPV. We used a qualitative approach and interviews were conducted with 31 upper secondary school male students. Two main themes 1) Promotion of equal health and 2) Increased knowledge facilitates the decision about HPV vaccination emerged from the analysis. The informants believed that it was important and fair to protect boys and girls equally against HPV. If HPV vaccination could prevent both girls and boys against an HPV-related disease, there was nothing to question or to discuss. It was not a matter of sex; it was a matter of equal rights. Moreover, an important reason for vaccinating boys was to prevent the transmission of the virus. However, the boys felt unsure and stated that they needed to know more. The school nurse and the school health were considered suitable both for distributing information and for providing the vaccinations.

In conclusion, the participants were in favor of introducing HPV vaccination also for boys in the national vaccination program. Sex-neutral HPV vaccinations were viewed both as a way to stop the virus transmission and a means to promote equal health for the entire population.

Socioeconomic and lifestyle factors associated with HPV infection in pregnant women: a matched case-control study in Beijing, China

Background

Human papillomavirus (HPV) infection plays key role in the development of cervical cancer. The purpose of this study was to investigate socioeconomic and lifestyle factors associated with HPV infection in pregnant women in Beijing, China.

Methods

An age matched case-control study designed with 66 women as the case group (HPV positive) and 132 women as the control group (HPV negative) was carried out in two hospitals in Beijing. Socioeconomic and lifestyle factors were obtained using a standard questionnaire. Cervical cells from study subjects were collected for HPV detection. An unconditional logistic regression model with backward stepwise selection was performed to predict the odds ratio (OR) and 95% confidence interval (CI) for the significant factors associated with HPV infection.

Results

The analyses of present data show that alcohol consumption during pregnancy was the strongest significant factor (OR = 3.35, 95% CI = 1.40–8.03, p = 0.007) when comparing the case (HPV positive) group with the control (HPV negative) group. There were no statistical differences observed in any of the socioeconomic factors when comparing the case and control groups.

Conclusion

The results of this study may help to prevent HPV infection in China by providing evidence to support improving the national policy on alcohol restriction and introducing public health interventions, especially for pregnant women in Beijing.

Healthcare provider perspectives on the uptake of the human papillomavirus vaccine among newcomers to Canada: a qualitative study

Human papillomavirus is among the most common sexually transmitted infections in the world. Newcomers, defined in Canada as foreign-born individuals who are either immigrants or refugees, but may also include students and undocumented migrants, face numerous barriers to HPV vaccination. This study sought to understand, from the perspective of healthcare providers, barriers and facilitators to HPV vaccination, and recommendations to improve HPV vaccine uptake among newcomers. Semi-structured interviews were conducted with 10 healthcare providers between March and April 2018. Data were analyzed at the manifest level using a Qualitative Content Analysis approach. Categories of barriers to vaccination included: access, communication, knowledge, culture, and provider-related factors. Facilitators included targeted health promotion; understanding the relevance of HPV vaccination; trusting the healthcare system; and cultural sensitivity. Two overarching recommendations were to publicly fund the HPV vaccine, and enhance language- and culturally-appropriate health promotion activities. Further research should explore informational desires and needs from the perspective of newcomers to inform strategies to promote equitable HPV vaccine coverage.

Evaluating the proposal of paediatric virology: An interview with Professor Tina Dalianis, Professor of Tumour Virology at Karolinska Institutet

Professor Tina Dalianis, Professor of Tumour Virology at Karolinska Institutet in Stockholm, Sweden, is a well-known virologist with a strong international reputation and seminal contributions in tumour virology in the fields of human papillomaviruses (HPVs) and polyomaviruses. According to Professor Dalianis, over the past decades virology has significantly contributed to the understanding of many infectious diseases in medicine. In addition, quite a few antiviral therapies have been developed in recent years that have been very helpful, while the study of viruses has also provided valuable information about their host cells and basic cell biology. She highlights the association of HPVs with tonsillar and base of tongue cancers, as well as their epidemic rise. She also refers to additional biomarkers, which are under investigation, in order to better individualise patient care, by for example, de-escalating or targeted therapy, whenever this is possible. She clarifies that the current prophylactic vaccines against HPVs are very efficient for the types they are directed against and she hopes that boys will also soon be vaccinated against HPVs, particularly in countries where there is a low percentage of girls being vaccinated. According to Professor Dalianis, the knowledge of virology is very useful in general paediatric practice; the proposal of paediatric virology as a medical subspecialty is absolutely correct and it would be very useful, as there is much to be done. In the context of the '4th Workshop on Paediatric Virology', Professor Tina Dalianis will give the plenary lecture of this scientific event and will focus on changes in the prevalence of different HPVs in genital and oral samples in some groups of youth in Sweden during the introduction of the vaccines against HPVs.