Studie bescheinigt Grippeimpfung negative Wirksamkeit
(ht) Der aktuelle Grippeimpfstoff hat gegenüber der echten Virusgrippe eine Wirksamkeit von -8 Prozent. Demnach haben Geimpfte ein höheres Risiko, zu erkranken als Ungeimpfte.
Eurosurveillance, Volume 20, Issue 4, 29 January 2015
Interim estimates of 2014/15 vaccine effectiveness against influenza A(H3N2) from Canada’s Sentinel Physician Surveillance Network, January 2015
"Consistent with substantial vaccine mismatch, little or no vaccine protection was observed overall, with adjusted VE against medically attended influenza A(H3N2) infection of −8% (95% CI: −50 to 23%). Given these findings, other adjunct protective measures should be considered to minimise morbidity and mortality, particularly among high-risk individuals. Virus and/or host factors influencing this reduced vaccine protection warrant further in-depth investigation."