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Could I have a statement, please? <a href=" http://www.cornwallfoodanddrink.co.uk/homework-and-assignment-help/ ">custom writing help</a> Until now, seasonal flu vaccines have only protected against three strains of flu - two strains of influenza A, which usually causes more cases and more severe illness, and one of influenza B, which is less common but also circulates in multiple forms.
