Gardasil 9 HPV Vaccine — 1 Dose

HPV infection is common among both men and women who have been sexually active. Some types of HPV may increase the risk of certain cancers and other HPV-related conditions.

In women, HPV infection may be associated with cervical cancer and vulval cancer. Cervical cancer has also been seen in younger age groups in recent years, with many cases occurring before the age of 55.

In men, HPV infection may be associated with anal cancer, genital warts, penile cancer and certain head and neck cancers, including oropharyngeal, laryngeal, oral and tongue cancers.

HPV vaccination, also known as cervical cancer vaccination, helps the body develop antibodies against HPV and supports protection against HPV-related diseases in both men and women.

The 9-valent HPV vaccine, also known as Gardasil 9, is a widely used HPV vaccine that provides broader coverage against HPV types. It is recognised by the Hong Kong Department of Health, the US Food and Drug Administration (FDA) and a number of international health authorities.

This vaccine helps protect against 9 high-risk and low-risk HPV types, and may help reduce the risk of several HPV-related cancers and genital warts.

HPV vaccination is suitable for males and females aged 9 or above.

Suitable groups include:

Adolescents

Recommended age: 9–14 years

Vaccination before adolescence may produce a stronger immune response and is ideally given before the start of sexual activity.

Young people and adults

Aged 15 or above

Even after sexual activity has begun, vaccination may still help protect against HPV types that the individual has not yet been exposed to.

The Centre for Health Protection in Hong Kong recommends priority vaccination for individuals aged 26 or below.

Individuals who have not had sexual intercourse

Those who have not been exposed to HPV may benefit most from vaccination, as protection is generally strongest before exposure.

Individuals who have had sexual intercourse

Vaccination may still help protect against HPV types that have not yet been acquired and may reduce the risk of future infection with additional HPV types.
HPV vaccines have been widely administered globally and have a well-established safety record.

Common mild side effects may include:

Redness, swelling or pain at the injection site

Mild fever or tiredness

Headache or muscle pain, usually resolving within 1–2 days

Severe allergic reactions are very rare. You will usually be observed for around 15 minutes after vaccination to help ensure safety.
You may eat as usual before vaccination.

If you feel unwell on the day, such as having a fever or active infection, vaccination should be postponed.

Individuals who have already been infected with HPV may still receive the vaccine to help protect against other HPV types.
Individuals who have already been infected with HPV: vaccination may still help protect against other HPV types that have not yet been acquired.

Pregnant women: vaccination is generally recommended to be postponed until after delivery.

Breastfeeding women: HPV vaccination can generally be given during breastfeeding.

HPV vaccination does not replace cervical smear screening. Even after completing HPV vaccination, women should continue regular cervical screening according to their doctor’s advice.

Vaccination and cervical screening together provide a more comprehensive approach to cervical cancer prevention.
Medical consultation and assessment

Vaccine injection and post-vaccination observation

Official vaccination record

Vaccination date reminder and follow-up arrangement
Q1. How long does protection from the HPV vaccine last?

A: Current studies suggest that protection from HPV vaccination can last for at least 10 years. Long-term studies are still ongoing. Existing data indicates durable protection, and a booster dose may not be required for most people.

Q2. Is HPV vaccination still useful if I have already had sexual intercourse?

A: Yes. Even if you have already had sexual intercourse, HPV vaccination may still help protect against HPV types that you have not yet acquired.

Studies suggest that vaccination may still provide benefit for individuals up to the age of 45, subject to medical assessment.

Q3. Do I need to have an HPV test before vaccination?

A: No. HPV testing is not required before vaccination. Regardless of whether you have previously been exposed to HPV, the vaccine may still help protect against other HPV types that you have not acquired.

Q4. Why should men receive the HPV vaccine?

A: HPV vaccination in men may help reduce the risk of anal cancer, oropharyngeal cancer, penile cancer and genital warts. It may also help reduce transmission to partners and support broader community protection.

Q5. How long after HPV vaccination can I start planning for pregnancy?

A: It is generally advisable to complete the full vaccination course, either 2 or 3 doses depending on age and clinical recommendation, before planning pregnancy.

You may wish to wait for around one month after completing the course before starting pregnancy planning. Please consult your doctor for individual advice.

Q6. What is the difference between the 9-valent HPV vaccine and the quadrivalent HPV vaccine?

A: The 9-valent HPV vaccine provides coverage against five additional high-risk HPV types: 31, 33, 45, 52 and 58, compared with the quadrivalent vaccine.

This offers broader protection against HPV types associated with cervical cancer and other HPV-related diseases.

Q7. Is there an upper age limit for HPV vaccination?

A: In Hong Kong, HPV vaccination is registered for individuals aged 9–45. People aged over 45 may consult a doctor to assess the potential benefits and suitability of vaccination.

Q8. What should I do if my HPV vaccination schedule is delayed?

A: You do not usually need to restart the course. You should continue with the remaining doses and complete the vaccination schedule as soon as practicable, according to medical advice.

Q9. Where can I receive the HPV vaccine?

A: Seed Medical provides HPV vaccination services, with assessment and administration by registered healthcare professionals.

Please contact our team to check vaccine availability and arrange an appointment.