The flu is not just a bad cold. Influenza is a contagious respiratory illness that can escalate to serious complications, like pneumonia. In the Philippines, flu season peaks twice a year, during the rainy months and again during the cold Christmas months. With the constant risk of serious complications to the different age groups, the best way to build your immunity is through flu vaccine.
Be part of the disease control initiative by knowing the crucial details when getting the flu vaccine. The annual flu vaccine takes less than five minutes and significantly reduces your risk of severe illness and hospitalization. Discover the breakdown of the vaccination schedule, dosage by age, cost in the Philippines, and what side effects to expect in this guide.
What Is the Flu Vaccine?
The flu vaccine, also called the influenza vaccine or flu shot, teaches your immune system to recognize the influenza virus and respond before it causes serious illness. Most flu vaccines available in the Philippines are quadrivalent, protecting against four strains at once. Getting the annual flu shot is the most reliable protection against severe illness and serious complications from seasonal influenza.
Who Should Get the Flu Vaccine?
Anyone 6 months of age and older can receive the flu vaccine. The Philippine Department of Health prioritizes annual flu vaccination for people at highest risk of severe illness and serious complications from the flu virus.
- Children 6 months to 5 years of age
- Adults 65 years of age and older
- Pregnant women at any stage of pregnancy
- People with chronic health conditions such as asthma, diabetes, kidney disease, or heart disease
- Individuals with weakened immune systems or medical conditions affecting lung function
- Healthcare workers and household contacts of high-risk individuals
Flu Vaccine Schedule: When to Get Vaccinated
In the Philippines, the ideal time to get vaccinated is before flu season peaks. The best windows are April to June ahead of the rainy months, or October to November before the cold Christmas months. Getting vaccinated early gives your immune system about two weeks to build a stronger immune response before the flu virus starts circulating widely.
Read this related article to know more about seasonal flu
The recommended flu vaccination schedule by age is:
- Children 6 months to 8 years (first time vaccinated): Two doses, at least 4 weeks apart
- Children 6 months to 8 years (subsequent years): One dose per year
- Children 9 years of age and older: One dose per year
- Adults and older individuals: One dose per year
- Pregnant women: One dose during any trimester
The World Health Organization recommends an annual flu shot because the influenza virus changes from year to year and immunity from a previous vaccination fades over time.
Flu Vaccine Dosage by Age
Dosage depends on the patient’s age and the specific vaccine brand used. Your doctor will confirm the correct dose based on age and health status before administering the flu jab.
- 6 to 35 months: 0.25 mL or 0.5 mL (varies by brand; confirm with your pediatrician)
- 3 years of age and older: 0.5 mL standard dose
- Injection site: Upper arm (deltoid muscle) for older children and adults; outer thigh for infants and toddlers
For more vaccination schedules, you can check our guide for infant vaccine schedules. At the same time you can book appointments with the right doctor for children’s vaccination on NowServing.
Flu Vaccine Cost in the Philippines (2026)
Flu vaccine prices vary depending on the clinic, hospital, and brand. These are the typical price ranges for private vaccination as of 2026.
| Patient Type | Estimated Cost |
| Adults at private clinics or hospitals | PHP 700 to PHP 1,500 |
| Pediatric dose for infants and toddlers | PHP 500 to PHP 1,000 |
| Children 3 years and older | PHP 600 to PHP 1,200 |
Free flu vaccines are available for priority groups including senior citizens, pregnant women, and healthcare workers through DOH programs at government health centers and Rural Health Units. Contact your local RHU to check current stock and availability.
If you have an HMO plan, check with your provider whether annual flu vaccination is covered before booking your appointment.
Browse our HMO directory to find your health insurance.
Common Side Effects of the Flu Vaccine
Flu shot side effects are typically mild and resolve within one to two days. They are a sign that your immune system is building its response to the flu virus, not an indication that the vaccine made you sick.
Common flu shot side effects include:
- Soreness, redness, or mild swelling at the injection site
- Low-grade fever
- Mild body aches or headache
- Fatigue for a day or two
Serious side effects are rare. In uncommon cases, a person may have an allergic reaction shortly after receiving the flu vaccine. Vaccination clinics keep medication on hand to manage these reactions immediately.
Tell your doctor beforehand if you have had a severe allergic reaction to a previous flu vaccine or have a known egg allergy, since some formulations require special precautions.
Frequently Asked Questions (FAQs) About Flu Immunization
Can the flu shot give you the flu?
No. The flu vaccine uses inactivated (killed) influenza virus and cannot cause infection. Mild symptoms like low-grade fever or body aches after vaccination are normal immune responses, not the flu itself.
Who should not get the flu vaccine?
Infants under 6 months of age are too young for the flu vaccine. Anyone with a history of severe allergic reaction to a prior flu shot should speak with their doctor before vaccinating again. If you are sick on your scheduled vaccination day, reschedule until you recover.
Is the flu vaccine safe during pregnancy?
Yes. The inactivated flu vaccine is safe and recommended at any stage of pregnancy. It protects the mother from serious illness during seasonal flu and passes protective antibodies to the baby.
How long does the flu shot protect you?
Protection from the seasonal flu vaccine typically lasts around 6 months. Since the influenza virus changes annually and immunity fades, getting an annual flu shot each year keeps your protection current.
Where can I get the flu vaccine in the Philippines?
Flu vaccines are available at private clinics, pediatric clinics, pharmacies with immunization services, and government health centers. You can also browse doctors for colds and flu on NowServing, or consult an infectious disease doctor if you have underlying health conditions that affect your risk.
What should I do before and after getting a flu shot?
There are no preparations needed when it comes to getting a flu shot, but you can do things beforehand like, checking which vaccines you haven’t received yet. You can contact your doctor on NowServing, or if you don’t have a doctor yet, you can find a specialist there.
Conclusion
Influenza is a contagious respiratory illness that spreads fast and can send vulnerable patients to the hospital. One flu shot a year protects you, your children, and the people around you from the most serious outcomes of seasonal flu.
For more on understanding and managing the flu, read about what causes the flu, explore flu symptoms, or try home remedies for flu at home. You can also consult a doctor online for flu through NowServing.
Book children’s vaccination or adult vaccinations on NowServing, you can find infectious disease doctors and other specialists in our doctor directory.
