Why didn't my flu jab keep influenza at bay this year?

By Liam Mannix, Kate Aubusson, Aisha Dow
Updated June 28 2018 - 1:23pm, first published September 28 2017 - 12:00am
The vaccine's effectiveness fluctuates each year. Photo: AP
The vaccine's effectiveness fluctuates each year. Photo: AP

THE flu vaccine's effectiveness may have dropped below 40 per cent this year, experts say, as flaws in its manufacturing and design become apparent.

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