The latest Trivalent influenza vaccination service will be available in September at Blue Care.

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Influenza is an acute illness of the respiratory tract caused by influenza viruses. It can be caused by various types of influenza viruses. In Hong Kong, the two subtypes of influenza A virus, H1N1 and H3N2, and influenza B virus, are most commonly seen. Influenza occurs in Hong Kong throughout the year, but is usually more common in periods from January to March/April and from July to August.

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Since it takes about two weeks after vaccination for antibodies to develop in the body and provide protection against influenza virus infection, it is advised to get vaccinated at least two weeks before the arrival of winter influenza season to protect family and friends.

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