School-Age & Preteen Vaccines
HPV Vaccine Side Effects in Preteens & Teens
Expect a sore arm and maybe a day of feeling off-colour — and have your teen sit for 15 minutes after the shot, since this age group can feel faint after any injection.
Written and fact-checked by the ParentVibes editorial team against WHO, IAP, CDC and NHS immunisation guidance. Not yet reviewed by a named clinician.
Quick facts
- Usually given
- 9–14 years, upper arm
- Doses
- 2 doses, 6 months apart
- Protects against
- Cervical & other HPV cancers
- Typical reaction
- Sore arm ± brief dizziness
- Usually settles in
- 1–2 days
The HPV (human papillomavirus) vaccine is one of the few vaccines that directly prevents cancer. Given as two doses six months apart between 9 and 14 years — to girls, and increasingly to boys too — it protects against the HPV infections behind most cervical cancers and several other cancers in adulthood. India now has its own indigenously developed vaccine, Cervavac, alongside the long-used Gardasil.
Because this vaccine goes to older children rather than babies, the side-effect picture looks a little different from the shots parents remember from infancy. The arm reactions are similar — soreness, a bit of redness — but preteens and teens are also the age group most likely to feel dizzy or even faint right after any injection. That reaction has nothing to do with what is in the syringe, and a simple 15-minute sit-down after the shot handles it.
What the HPV vaccine is
The HPV vaccine is a non-live vaccine made from harmless virus-like particles — empty protein shells that teach the immune system to recognise HPV without any possibility of causing infection. It is injected into the muscle of the upper arm.
The IAP recommends it for girls (and supports it for boys) starting at 9 years, because the immune response is strongest — and only two doses are needed — when it is given well before any exposure to the virus. Both Cervavac and Gardasil work the same way and have similar, mild side-effect profiles.
Why so young?
Vaccinating at 9–14 isn't about present risk — it's about building the strongest possible protection years before it could ever be needed. Younger immune systems respond so well that two doses do the work of three.
Common HPV vaccine side effects
Most reactions are at the injection site or general 'off-colour' feelings that fade within a couple of days.
A sore arm (very common)
Aching, tenderness or heaviness in the injected arm is by far the most common complaint. It usually peaks the same evening or next day and eases within a day or two.
Redness or swelling at the site
A patch of redness or a slightly raised, firm area where the needle went in is common and settles on its own over a few days.
Headache and tiredness
Some preteens and teens feel headachy, tired or generally flat for a day after the dose. A quiet evening and an early night are usually all it takes.
Mild fever or nausea
A low-grade temperature or a queasy stomach can occur in the first 24 hours and typically passes quickly without treatment.
Feeling faint or dizzy just after the injection
Fainting (syncope) shortly after a shot is well recognised in this age group. It is triggered by the experience — nerves, pain, standing up too fast — not by the vaccine's contents, and it is exactly why clinics keep teens seated for 15 minutes afterwards.
What's usually normal after the HPV vaccine
These reactions are expected and don't need any medical attention:
- An arm that aches when raised or slept on for a day or two after the dose.
- A small area of redness, swelling or firmness at the injection spot.
- Feeling briefly light-headed, sweaty or wobbly in the minutes after the shot — recovering fully after sitting or lying down.
- Being asked to wait 15 minutes at the vaccination centre before leaving — this is standard practice for this age group, not a sign of concern.
- A headache, tiredness or mild queasiness on the day of the vaccine.
- Feeling completely back to normal by the second or third day.
How long HPV vaccine side effects last
- Arm soreness: usually 1–2 days, occasionally up to 3.
- Redness or swelling at the site: typically fades over 2–3 days.
- Light-headedness or a faint immediately after the shot: minutes — fully resolved after a short rest at the clinic.
- Headache, tiredness, mild fever or nausea: usually within 24 hours.
- The second dose, six months later, tends to feel much the same as the first — knowing what to expect makes it easier.
Home care after the HPV vaccine
A little preparation before the shot and simple comfort measures afterwards cover almost everything.
At the vaccination centre
- Make sure your child has eaten and had water beforehand — arriving hungry makes faintness more likely.
- Have them receive the injection sitting down, and stay seated for the full 15-minute observation period.
- Tell the vaccinator if your child has ever fainted after an injection or blood test — they'll have them lie down for the shot.
- Distraction genuinely helps at this age: a phone, conversation, or looking away during the injection.
At home afterwards
- Encourage gentle use of the arm — normal movement eases stiffness faster than resting it completely.
- A cool, damp cloth on the sore spot for a few minutes can take the edge off.
- For a bothersome headache or fever, paracetamol in the dose your doctor has advised is fine; heavy sports can wait until the next day if the arm is sore.
Warning signs — see a doctor urgently
Serious reactions to the HPV vaccine are rare, but get urgent medical help for:
Seek urgent medical care if your child has
- Signs of a severe allergic reaction — difficulty breathing, swelling of the face, lips or throat, or widespread hives, usually within minutes to an hour of the injection.
- A faint where your child hit their head, was injured in the fall, or does not recover fully within a few minutes of lying down.
- Brief jerking movements during a faint that don't stop once they are lying flat, or any loss of consciousness that seems more than a simple faint.
- High fever with your child looking or feeling seriously unwell.
- A severe headache with repeated vomiting, a stiff neck or confusion.
- Rapidly spreading redness, warmth and pain at the injection site over the following days.
Call your doctor immediately — or go straight to the nearest emergency department.
🩺 Find a paediatricianFor breathing difficulty or facial swelling, treat it as an emergency — go to the nearest hospital immediately rather than waiting to see if it passes.
When to call your paediatrician
Not urgent, but worth a call:
- Arm pain, redness or swelling that is getting worse rather than better after 2–3 days.
- Fever that lasts beyond 48 hours after the vaccine.
- Dizzy spells that continue into the next day rather than passing at the clinic.
- Your child fainted at the clinic and you'd like advice on how to make the second dose easier.
- Anything that doesn't sit right with you — a quick call is always reasonable.
Frequently asked questions
Why did my daughter faint after her HPV shot?
Fainting shortly after an injection is well documented in preteens and teens — it's a nervous-system response to the moment (anticipation, pain, standing up quickly), not a reaction to anything in the vaccine. It happens with blood tests and other injections at this age too. Recovery is quick once they lie down, which is why centres keep teens seated for 15 minutes afterwards.
Does the HPV vaccine affect fertility?
No. There is no evidence from hundreds of millions of doses worldwide that the HPV vaccine affects fertility. If anything, it protects future fertility — cervical cancer and its treatments are a real threat to childbearing, and this vaccine prevents most of the infections that cause it.
Is the HPV vaccine only for girls?
No. It is prioritised for girls because of cervical cancer, but HPV also causes cancers and genital warts in males, and vaccinating boys is increasingly recommended. Ask your paediatrician what's advised and available for your son.
Is Cervavac as safe as Gardasil?
Cervavac, India's indigenously developed HPV vaccine, went through the same kind of clinical trials and regulatory approval and shows a similar mild side-effect profile — mostly sore arms and short-lived, flu-like symptoms. Your doctor or vaccination centre will use whichever is available; both protect against the highest-risk HPV types.
What if the second dose is delayed beyond 6 months?
The series doesn't need to be restarted. If the gap stretches longer than planned, simply get the second dose as soon as you can — the schedule picks up where it left off. Mention the delay to your paediatrician so it's recorded properly.
Can the HPV vaccine give my child an HPV infection or cancer?
No. The vaccine contains no live virus — only empty, virus-like protein shells that cannot infect cells or cause disease. Its long-term safety record, tracked across many countries for well over a decade, is strong.
Your next steps
Track your baby's vaccines
Enter your baby's birth date to get a personalised vaccine timeline with reminders, so no dose slips.
Open Vaccination TrackerVaccination schedule India
The full IAP-style immunisation chart from birth to the teen years, explained in plain language.
See the full scheduleFind a paediatrician
Worried about a reaction, or due for the next dose? Find a trusted paediatrician near you.
Find a pediatricianRelated vaccine guides
Sources
- WHO — Vaccine safety and side effects
- Indian Academy of Pediatrics (IAP) — Immunization guidelines
- CDC — Possible side effects from vaccines
- NHS — NHS vaccinations and when to have them
- WHO — Human papillomavirus vaccines position paper
- CDC — HPV vaccine safety and effectiveness
- NHS — HPV vaccine
Next review due: 6 January 2027.
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Medical disclaimer
This page is educational information about common vaccine reactions and is not a substitute for medical advice, diagnosis or treatment. Every child is different — always follow the guidance of your paediatrician or vaccination centre. If your child has trouble breathing, swelling of the face or throat, a fast heartbeat, hives all over, dizziness or weakness soon after a vaccine, or seems seriously unwell at any point, seek emergency medical care immediately. When in doubt, always get your child checked — it is never a waste of anyone's time.
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