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Robert Koch Institute: "Efficacy of influenza vaccination less than expected"

Gert van der Hoek

In Memoriam - Editor, Senior Moderator
Robert Koch Institute: "Efficacy of influenza vaccination less than expected"

The efficacy of the annual flu shot was disappointing during the last season, the German Robert Koch Institute said.

On average the corrected effectiveness was 49%, however, there was considerable variation by age.

The highest level of protection was found in children between 0 and 14 years: 65%.

Efficacy of people older than 60 was no more than 27%.

According to the RKI there are indications showing vaccinated people who still got flu, were protected against a serious course.

More research is needed on this point says RKI.

Physicians should be alert: vaccinated patients may have flu anyway.

The RKI recommends vaccination for high-risk groups in the coming season.

Robert Koch-Institut - Epidemiologisches Bulletin Nr. 41 - 15. Oktober 2012

Wirksamkeit der Influenza-Impfung gegen saisonale
Influenza A(H3N2) in der Saison 2011/2012


Zusammenfassend ist die Wirksamkeit der saisonalen Influenza-
Impfung gegen eine laborbestätigte Influenza-Erkrankung
durch den Subtyp Influenza A(H3N2) in der Saison
2011/2012 geringer als erwartet einzustufen. Auch
wenn der Schutz vor einer Erkrankung nicht bei allen Geimpften
gegeben ist, so kann es dennoch sein, dass z. B.
geimpfte Risikopersonen zwar nicht vor einer Erkrankung,
aber vor einem schweren Verlauf geschützt sind. Zur Bestimmung
des Effektes für diesen Endpunkt sind jedoch
weitere Studien notwendig. Für das klinische Management
bedeuten die Ergebnisse, dass bei Patienten mit grippetypischen
Symptomen auch dann an eine Influenza gedacht
werden sollte (und ggf. eine antivirale Therapie eingeleitet
werden sollte), wenn der Patient geimpft ist.

.....

Trotz der in der letzten Saison eingeschränkten Wirksamkeit
bleibt die Influenza-Impfung die wichtigste Säule in
der Influenzaprophylaxe. Die STIKO empfiehlt daher den
oben angesprochenen Risikogruppen, sich in den Monaten
Oktober oder November impfen zu lassen, um rechtzeitig
zum Beginn der Influenzawelle geschützt zu sein.

RKI

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