Prophylaxe der kaninen Parvovirose

Zusammenfassung

Wenngleich Impfstoffe, v. a. die gegen das kanine Parvovirus (CPV), heutzutage als sehr sicher gelten, können in seltenen Fällen dennoch postvakzinale Nebenwirkungen auftreten. Hierzu zählen zum einen milde Symptome, die sich kurz (innerhalb weniger Tage) nach der Impfung entwickeln (z. B. gastrointestinale Symptome, Fieber, reduziertes Allgemeinbefinden, Lymphadenopathie). Sie werden als Folgen der Replikation des Impfvirus gewertet und sind ein Anzeichen für eine gute Immunantwort. Die ebenfalls kurz nach der Impfung vorkommenden anaphylaktischen Reaktionen können lebensbedrohlich sein. Betroffene Hunde zeigen Symptome wie Ödeme, Speicheln, Erbrechen, Durchfall, Hypotension und/oder Schock. Oft ist unklar, welcher Bestandteil des Impfstoffs die anaphylaktische Reaktion ausgelöst hat. Es ist daher wichtig, Hunde mit vorangegangenen anaphylaktischen Reaktionen nur noch mit unbedingt notwendigen Komponenten zu impfen. Sind Wiederholungsimpfungen notwendig, z. B. weil sich keine Antikörper gegen CPV nachweisen lassen, sollte besser eine Monovakzine gegen CPV (und ggf. gegen weitere notwendige Komponenten) verwendet werden. Ein Wechsel des Impfstoffherstellers beugt möglicherweise ebenfalls einer erneuten anaphylaktischen Reaktion vor. Die längere Zeit nach Impfung auftretenden Autoimmunkrankheiten, z. B. die immunmediierte hämolytische Anämie (IMHA), könnten die Folge einer zu häufigen Vakzination von Hunden sein oder durch Impfung getriggert werden. So wurden einige Hunde mit IMHA einige Wochen vor Ausbruch der Erkrankung geimpft. Bei diesen Hunden sollten weitere Impfungen unbedingt vermieden werden.

Abstract

Although nowadays vaccines, especially those against canine parvovirus (CPV), are considered to be safe, vaccine-associated adverse events (VAAEs) can occur in rare cases. Some VAAEs are mild and manifest shortly (within a few days) after vaccination (e. g. gastrointestinal signs, fever, reduced general condition, lymphadenopathy). These signs are likely a result of vaccine virus replication and indicate a good immune response. Anaphylactic reactions can also occur promptly following vaccine administration and might be life threatening. Affected dogs show clinical signs such as edema, salivation, vomiting, diarrhea, hypotension, and/or shock. Since it is often unclear which component of the vaccine carries responsibility for the anaphylactic reaction it is important to limit future vaccinations of these dogs to indispensable components only. When revaccination is unavoidable, e. g. because antibodies against CPV cannot be detected, combined vaccines should not be used and CPV (and other components, if needed) should preferably be vaccinated separately. Changing the vaccine manufacturer might also prevent further anaphylactic reactions. Finally, there are VAAEs occurring after a prolonged period of time. In dogs, it is discussed that autoimmune diseases, such as immune-mediated hemolytic anemia (IMHA), can be a consequence of excessive vaccination or in the least be triggered by vaccination. Numerous dogs with IMHA are reported to have a history of receiving a vaccination within a few weeks before the onset of clinical sings. In such dogs, further vaccinations should generally be avoided.

Schlüsselwörter

Kanines Parvovirus - CPV - Hund - Immunisierung - Impfstoff - Vakzine - MLV - anaphylaktische Reaktion - Autoimmunkrankheit

Key words

Canine parvovirus - CPV - dog - vaccination - immunization - vaccine - MLV - anaphylactic reaction - autoimmune disease

Publikationsverlauf

Eingereicht: 01. März 2021

Angenommen: 16. Juni 2021

Artikel online veröffentlicht:
23. August 2021

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