HPV Vaccination
2019.11.1
*Available in Chi Version Only
Related Information
HPV Vaccination *Availalbe in Chi Version Only 2018.12.12 
HPV DNA Genotyping Test Regular Check-ups to Prevent HPV Infection Is HPV a Virus That Only Affects Women? According to the Centre for Health Protection, studies show that up to 75% of sexually active men and women will be infected with HPV (human papillomavirus) at some point in their lives.While condoms can reduce the risk of transmission, they cannot fully cover all genital skin, meaning unprotected areas may still become infected.HPV can remain dormant for years, and the absence of symptoms does not mean you are free from infection.Getting the HPV vaccine early can help prevent infection by the human papillomavirus. However, as the vaccine cannot protect against all HPV strains, regular cervical screening is still necessary to prevent cervical cancer. What Health Problems Can HPV Cause? Most HPV infections do not cause any symptoms, but in some cases, they can lead to disease.HPV transmitted through skin-to-skin contact can cause common warts on the hands and feet.Sexually transmitted HPV infects the genital and anal areas, causing genital warts (commonly known as “cauliflower warts”).High-risk HPV strains can lead to cancer over time, including cervical cancer, vulvar cancer, vaginal cancer, penile cancer, and anal cancer. How Can I Know If I Have HPV? There are several tests to check for abnormalities in cervical cells.The most common method is the Pap smear test.Another option is the HPV DNA genotyping test, which can detect the presence of specific high-risk HPV types even before cellular changes occur. The First Line of Defense Against Cervical Cancer Although Pap smear screening helps detect cell abnormalities, HPV infection can persist silently for years before progressing to cervical cancer.During this stage, Pap tests may not always identify early changes.Early screening using HPV DNA testing can detect the virus itself before it causes abnormal cell growth, offering a more effective way to prevent cervical cancer. What Can HPV DNA Screening Detect? If HPV is detected:Consult a doctor for further assessment, such as colposcopy, to check for the presence of precancerous cervical cells. If HPV is not detected:This indicates no HPV infection was found in your cervical cells.Nonetheless, you should continue to undergo regular cervical screenings to ensure ongoing protection against cervical cancer. Do I Need to Get an HPV DNA Test Before Vaccination? Testing before vaccination is not mandatory.HPV DNA testing helps identify early cellular changes caused by existing infection, while the HPV vaccine aims to prevent infection from specific HPV types you haven’t yet contracted.However, for individuals who are already sexually active, a preliminary HPV DNA test can be useful to determine if the cervix is healthy and whether any early treatment is required. 2020.10.12 
Know more about HPV Vaccine What Is the Relationship Between Cervical Cancer and HPV? According to the Hospital Authority’s 2016 data, there are 510 new cases of cervical cancer and 151 deaths each year in Hong Kong.Human papillomavirus (HPV) is one of the major causes of cervical cancer. Women aged 26–30 and 46–55 are at the highest risk of infection. Both men and women can become infected with HPV and develop related diseases.Once infected, HPV can cause the following conditions: Men Women Anal cancer Anal cancer Genital warts (condyloma acuminatum) Genital warts (condyloma acuminatum) May transmit HPV to partner, increasing their risk of cancer or warts Vulvar cancer, vaginal cancer, and cervical cancer How Can Cervical Cancer Be Prevented? Quit smoking and avoid secondhand smoke. Use condoms to reduce the risk of HPV transmission. Undergo regular cervical screening (Pap smear). Get vaccinated with the HPV vaccine (also known as the cervical cancer vaccine). About the Cervical Cancer (HPV) Vaccine The human papillomavirus (HPV) vaccine—also known as the cervical cancer vaccine—is a preventive vaccine that protects against cervical cancer and other HPV-related diseases.Both men and women can receive the vaccine. In Hong Kong, two types of prescription HPV vaccines are commonly available: Quadrivalent HPV vaccine (4-in-1) 9-valent HPV vaccine (9-in-1) Both require prescription and administration under medical supervision.The 9-valent vaccine protects against 9 HPV types responsible for about 80–90% of HPV-related cancers and diseases, making it a more comprehensive choice.It also helps prevent genital warts and can be given to both women and men. Type HPV Types Covered Recommended Age Dosage Schedule Quadrivalent (4‑in‑1) 6, 11, 16, 18 From age 9 (male & female) 9–13 years: 2 doses / 14+ years: 3 doses 9-valent (9‑in‑1) 6, 11, 16, 18, 31, 33, 45, 52, 58 From age 9 (male & female) Before Oct 31, 2016: 9+ years – 3 doses / After Oct 31, 2016: 9–14 years – 2 doses, 15+ years – 3 doses Frequently Asked Questions 1) How many doses are required for the cervical cancer (HPV) vaccine?According to manufacturer guidelines, three doses are administered over six months: at 0, 2, and 6 months (i.e., two and four months apart). 2) Which pharmaceutical company produces the vaccine? Are there new and old versions?The vaccine used is Gardasil 9, produced by Merck & Co. (MSD), USA.There is only one version—the so‑called “new” and “old” batches refer only to packaging differences.All vaccines are legally sourced, original manufacturer products, properly stored and transported, and within valid expiry dates. 3) What’s the difference between two and three doses?According to Hong Kong’s Department of Health, adolescents aged 9–14 only need two doses, while those aged 15 and above should receive three doses to achieve the same level of immunity. 4) Who should get the HPV vaccine?The vaccine is most effective for individuals who have not been infected with HPV.However, women who are sexually active or have given birth are also encouraged to receive it.Because the vaccine protects against at least four HPV types, and most women are not infected with all of them simultaneously, vaccination remains beneficial. 5) Can I get vaccinated during pregnancy?Important notes: You can become pregnant immediately after completing the three-dose vaccination course. Vaccination during pregnancy is not recommended. It is safe to receive the vaccine after childbirth or while breastfeeding. 6) Are there side effects?The HPV vaccine is generally safe.Common mild side effects include redness, swelling, or pain at the injection site, mild fever, headache, or nausea.Individuals who have had severe allergic reactions to any vaccine ingredient should not receive it.If in doubt, consult your doctor.Hong Kong’s Department of Health operates a pharmacovigilance system to monitor vaccine safety. 7) Do I still need cervical cancer screening after vaccination?Yes.Even after vaccination, women should continue regular Pap smear screening, as the vaccine cannot treat preexisting HPV infections or protect against HPV types not covered by the vaccine. 2020.1.1