https://www.selleckchem.com/products/tph104m.html
BACKGROUND Since 2013, quadrivalent influenza vaccines containing two B viruses gradually replaced trivalent vaccines in the United States. We compared vaccine effectiveness of quadrivalent to trivalent inactivated vaccines (IIV4 to IIV3) against illness due to influenza B during the transition when IIV4 use increased rapidly. METHODS The US Influenza Vaccine Effectiveness (Flu VE) Network analyzed 25,019 of 42,600 outpatients aged ≥6 months enrolled within 7 days of illness-onset during six seasons from 2011-2012. Upper respiratory spe
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