In the quest for a universal influenza vaccine - one that elicits broadly neutralizing antibodies that can protect against most or all strains of flu virus - scientists have faced a sobering question: Does pre-existing immunity generated by prior exposure to influenza virus or vaccine hamper production of broadly neutralizing antibodies? If so, then a universal flu vaccine might work best (and perhaps only) in very young children who have had limited exposure to influenza viruses or vaccines...
via Health News from Medical News Today Read More Here..
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