Vaccines
Lab Tests & Diagnostics
Quezon City
The Quadrivalent Flu Vaccine protects against four common influenza strains — two influenza A and two influenza B — for broader seasonal protection than older trivalent vaccines. Annual vaccination is recommended for everyone 6 months and older, especially during peak flu season.
Key things to know about the vaccine and how it works.
Broader protection compared to trivalent vaccines, the quadrivalent vaccine targets an additional influenza B strain, enhancing immunity against seasonal variants.
Mild side effects are common, such as soreness at the injection site or mild fatigue.
Serious reactions are rare, making the vaccine safe for most people.
Annual administration is necessary due to the flu virus’s ability to change year by year.
Each updated vaccine targets the latest flu strains, providing the best available immunity.
Who benefits most from the flu vaccine? Should you get vaccinated?
The Flu Vaccine (Quadrivalent) offers broad protection against four strains of influenza, reducing the risk of seasonal flu and promoting a healthier, more resilient immune system.
Lowers the chances of contracting the flu and helps prevent severe symptoms if infected. This protection reduces the likelihood of complications and speeds up recovery.
Offers essential defense for people with weaker immune systems, such as young children, seniors, and those with chronic health conditions. By getting vaccinated, you help protect yourself and others who are more susceptible to illness.
Reduces missed days at work, school, and other important activities due to flu-related illness. With fewer interruptions, you can maintain productivity and enjoy more uninterrupted time with family and friends.
Contributes to herd immunity, lowering the spread of flu within communities, workplaces, and schools. This added layer of protection benefits everyone by reducing overall flu cases.
Provides mental reassurance during flu season, reducing anxiety about potential illness. By taking this preventive step, you can feel more confident in public spaces and social settings.
Answers to what patients ask most often about this vaccine.
A quadrivalent flu vaccine protects against four different influenza viruses: two influenza A viruses and two influenza B viruses. This provides broader protection compared to trivalent vaccines that only cover three strains
The CDC recommends annual flu vaccination for everyone 6 months and older, with rare exceptions. It's especially important for: People 65 years and older Pregnant women People with chronic health conditions Healthcare workers Caregivers of high-risk individuals
Get vaccinated before flu season begins, ideally by the end of October. However, vaccination can continue throughout flu season, even into January or later
Most side effects are mild and resolve within a few days: Soreness, redness, and swelling at injection site Low-grade fever Mild muscle aches Headache Fatigue
No. The flu vaccine cannot cause flu illness. The viruses in flu shots are either killed (inactivated) or significantly weakened (attenuated), making them unable to cause infection
Effectiveness varies year to year, typically reducing flu risk by 40-60% when the vaccine matches circulating strains well. Even if you get flu after vaccination, symptoms are usually milder
Consult your healthcare provider if you: Have severe, life-threatening allergies to vaccine ingredients Had a severe reaction to a previous flu vaccine Have ever had Guillain-Barré Syndrome Are currently feeling ill with fever
Protection lasts throughout the flu season but gradually decreases over time. Annual vaccination is needed because: Flu viruses constantly change Immune protection naturally declines Vaccine composition is updated annually
Yes, it's safe to get the flu vaccine at the same time as other vaccines, including COVID-19 vaccines. Different injection sites will be used. It's especially important for: People 65 years and older Pregnant women People with chronic health conditions Healthcare workers Caregivers of high-risk individuals
Walk in or book ahead at any of our 15 SureVax branches across Metro Manila. Open daily 7 AM–9 PM.
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