Abstract
Human papilloma virus (HPV) vaccine for adolescents was recommended as an effective prevention strategy of HPV-related cancers. In Vietnam, HPV vaccination has not been introduced to male adolescent. This study was conducted to examine the acceptance of having boys vaccinated against HPV and its underlying reasoning, and to identify their parent's willingness to pay (WTP) for HPV vaccination in central Vietnam. 785 parents of boys were directly interviewed based on a structured questionnaire. Parent's acceptability of HPV vaccine for their sons was identified by one question with response on 3-point scale (agree, don't know, and disagree). Multivariate logistic regression model was used to determine contributing factors to participant's acceptance. Bidding game method was applied to elicit WTP values for HPV vaccination with initial bid of 161.2 USD. The results showed that 49.2% of parents agreed to have their sons vaccinated against HPV. Factors that influenced parent's acceptance including son's age older than 12 years (OR = 1.5; 95% CI: 1.08–1.98); being eldest son (OR = 1.6; 95% CI: 1.13–2.19), being mother (OR = 1.4; 95% CI: 1.01–1.91), parents with high educational level (OR = 1.7; 95% CI: 1.11–2.47) and their knowledge of HPV and HPV vaccine (OR = 1.8; 95% CI: 1.23–2.65). Average WTP value for full doses of HPV vaccine was 137.5 USD, ranging between 9 USD and 188.3 USD. Parents' knowledge of HPV and HPV vaccine was the only factor affecting WTP value (Rho: 0.11; p-value: 0.030). The findings suggest a strategy be introduced for HPV vaccination to male adolescents in Vietnam.
Highlights
Human papilloma virus (HPV) is a common group of viruses that are mainly transmitted through sexual contact
A cross-sectional study was conducted at secondary schools in Hue city which is the capital of Thua Thien Hue province located in central Vietnam
The number of male students whose parents participated in the study was distributed higher into sixth and seventh grades
Summary
Human papilloma virus (HPV) is a common group of viruses that are mainly transmitted through sexual contact. HPV infection has been considered as one of the most common viral infections with an estimation of 32.1% HPV-positive women in 2011. The global prevalence rate of genital HPV infection is almost similar to that in women (2–44%). The prevalence of HPV infection is higher in developing countries and young people [1]. There are more than 100 HPV types, and high-risk types are responsible for oropharyngeal cancers and anogenital cancers in both sexes such as cervical, anal, vulvar, vaginal, and penile cancers. Cervical cancer is ranked fourth among most common cancers in women with an estimated 570,000 new cases in 2018 representing 7.5% of all female cancer deaths: more than 85% of these occurred in low- and middle-income countries [2, 3]
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