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Trivalent Influenza Vaccine


Trivalent influenza vaccine has been used worldwide for many years, with its aim to prevent one of the two main influenza B types for basic influenza protection. It takes approximately two weeks after vaccination for the body to produce antibodies against influenza virus infection. This vaccine can prevent three kinds of influenza virus, i.e. A/California/7/2009 (H1N1), A/Texas/50/2012 (H3N2), and B/Massachusetts/2/2012.

What are the differences between trivalent and quadrivalent influenza vaccines?

The coverage of quadrivalent influenza vaccine includes two influenza A subtypes (Texas H3N2, H1N1) and two influenza B subtypes (Massachusetts, Brisbane). The new quadrivalent influenza vaccine can afford additional protection against meningococci serogroups A, C, W135 and Y, which gives a broader protection than the trivalent vaccine.

Who should receive the trivalent influenza vaccination?

People who aged 3 years old or above and haven’t received the influenza vaccination for this season. Those who received trivalent vaccination, including pregnant women and people with obesity, are also suitable for quadrivalent influenza vaccination.

What are the possible side effects of the influenza vaccine?

In normal circumstances, swelling or soreness may appear at the injection site after vaccination. Some recipients may experience fever or muscle pains, but these discomfort symptoms will not persist for long. Influenza vaccination may be rarely followed by adverse side effects like meningitis or severe allergic reactions, emergency consultation is required for these cases.

Who should not receive influenza vaccination?

People who are seriously allergic to eggs or the vaccine components are not suitable to receive influenza vaccination. If there are any queries, please consult your doctor to assess your suitability for the vaccination.

If you have any query, please call+ 852 21119518.

The above information is provided by professional doctor, and only used for educational purposes. If you have any discomfort, don’t hesitate to consult a doctor.