University of Veterinary Medicine Vienna - Research portal

Diagrammed Link to Homepage University of Veterinary Medicine, Vienna

Selected Publication:

Type of publication: Journal Article
Type of document: Case Report

Year: 2016

Authors: Unterweger, C; Wöchtl, B; Spergser, J; Brunthaler, R; Untersperger, M; Lillie-Jaschniski, K; Dürrwald, R; Hennig-Pauka, I

Title: [Influenza outbreak in weaners with involvement of Mycoplasma hyorhinis and Haemophilus parasuis. A case report].

Other title: Influenza outbreak in weaners with involvement of Mycoplasma hyorhinis and Haemophilus parasuis. A case report

Source: Tierarztl Prax Ausg G Grosstiere Nutztiere. 2016; 44(4):259-265

Authors Vetmeduni Vienna:

Brunthaler Rene
Hennig-Pauka Isabel
Spergser Joachim
Unterweger Christine
Wöchtl Bettina

Vetmed Research Units
Institute of Microbiology
Institute of Pathology
University Clinic for Swine

In a closed farrow-to-finish piglet producing farm 80% of 7-week-old piglets displayed respiratory disease with a 5% mortality rate. In addition to purulent bronchopneumonia in combination with interstitial pneumonia predominantly in the apical and middle lobes, fibrinous serositis was present in the thoracic and abdominal cavities. Further investigations succeeded in confirming the non-pandemic strain of porcine influenza A virus (FLUAVsw) subtype H1avN1. The molecular genetic studies on Mycoplasma (M.) hyopneumoniae and porcine reproductive and respiratory syndrome virus were negative, whereas M. hyorhinis and Haemophilus parasuis were isolated from serous membranes. The possible importance of the underrated M. hyorhinis as a cofactor for viral infections should be emphasized and we demonstrated that the cause of apical lobe pneumonia is not restricted to M. hyopneumoniae. Mother pigs had been vaccinated with an influenza vaccine covering the subtype H1avN1. Only 33% of the examined piglets had maternal antibodies in the 7th week of life. The difficulty of prophylaxis of infections by FLUAVsw in weaners due to lack of vaccine authorization for piglets before their 56th day is reflected by this observation.

Keywords Pubmed: Animals
Haemophilus Infections/microbiology
Haemophilus Infections/veterinary*
Haemophilus Infections/virology
Haemophilus parasuis/isolation & purification*
Influenza A virus
Mycoplasma Infections/microbiology
Mycoplasma Infections/veterinary*
Mycoplasma Infections/virology
Mycoplasma hyorhinis/isolation & purification*
Orthomyxoviridae Infections/microbiology
Orthomyxoviridae Infections/veterinary*
Swine Diseases/microbiology*
Swine Diseases/virology

© University of Veterinary Medicine ViennaHelp and Downloads