WILLKOMMEN zu unserem englischsprachigen Podcast, eine Serie über Schweinegesundheit und Management von Boehringer Ingelheim. 

Hier werden Internationale Meinungsbildner die relevantesten praktischen Fragen beantworten. 

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Airborne transmission: Tracking the spread of swine viruses through the air

“Vaccinating animals decreases clinical signs and also the amount of viruses in the air, so it is a good mechanism to reduce airborne transmission”

While taking her doctorate in veterinary population medicine at the University of Minnesota, Dr. Carmen Alonso investigated the extent to which swine viruses were transmitted in the air from a farm suffering an outbreak. In this conversation she describes the influence of particle size on the airborne transmission of the viruses of PRRS, Influenza A and the porcine epidemic diarrhoea syndrome --- and explains how even large particles with a high viral load can be carried a long distance. (Running time: 34 minutes) 

PRRS: Challenges shown by boar station breakdown

“A weak spot for PRRS control comes when you take boar semen or gilts from outside into a herd”

Better surveillance for PRRS at boar stations in Denmark has followed a breakdown at a PRRS-negative boar station which led to sharply reduced sow productivity at herds in the area, reports Professor Lars Erik Larsen of the University of Copenhagen. Investigators discovered that the break involved a recombinant form of the virus, combining strains from two vaccines used at a sow herd about 5 kilometres from the boar station. (Running time: 28 minutes) 

Covid coronavirus: How to protect farm workers

“Extra biosecurity should begin outside the farm…our graphics for training emphasise not only the risks from contacts within the farm, but also from those that workers have on their way to work and from their families.”

We talk to international veterinary consultant and population medicine expert Dr. Carmen Alonso about her recommendations for the precautions that a swine farm should take, to shield its farm workers from the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infection responsible for Covid-19 disease in humans during the worldwide pandemic. Dr. Alonso reports good results from using visual aids to convey key messages to the people who work on the farm.  (Running time: 32 minutes) 

IAV-S: Focus for control must include the farrowing unit

“Piglets as well as sows play a key role in transmitting the virus”

Veterinary virologist Dr. Pia Ryt-Hansen from the University of Copenhagen suggests practical lessons for controlling Porcine Respiratory Disease Complex viruses, based on her research into swine Influenza A virus or IAV-S in a sow herd in Denmark. Hear how production strategies and even maternally derived antibodies can actually contribute to viral persistence in the herd, plus potential benefits from the application of diagnostic tools such as genomic sequencing of virus identity and monitoring of coughing by pigs in the barn.
(Running time: 18 minutes) 

IAV-S: Mutation risk of a persistent year-round infection

“People coming into the herd should at least have a vaccination against influenza”

Influenza A virus (IAV-S) can occur constantly within a swine herd, all year round, warns Dr. Pia Ryt-Hansen in Denmark. This persistence provides an ideal environment for the virus to change. A particular risk would arise if visitors or farm staff introduced seasonal strains of human influenza virus.
Running time: 17 minutes

PRRS: When a virus beats the barriers

“Immunevasion and recombination are not linked, but both are part of the same complex allowing some PRRS viruses to evade the normal controls on the farm”

How can PRRS sometimes manage to penetrate apparently well protected farms? Viral mutation and the relatively slow completion of the pig’s immune response offer clues, according to this conversation with Dr. Enric Mateu, Professor of Animal Health at Universitat Autonoma de Barcelona in Spain and researcher at the CRESA Catalan institute of animal health.
Running time: 37 minutes

PPV: Viral evolution raises vaccine issues

“There are indications that some of the oldest vaccine strains are not providing full protection against emerging new genotypes of parvovirus”

Hear how Dr. Poul Henning Rathkjen (Boehringer Ingelheim Nordic) and Professor Hans Nauwynck (Head of Virology at the University of Ghent’s veterinary medicine faculty in Belgium) assess recent reports of the emergence of new, virulent strains of the porcine parvovirus PPV. (Running time: 35 minutes)

PRRS: New weapons against extra virulence

“In our challenge studies with a highly virulent European strain, the pigs had quite good protection from a vaccine that is new in Europe”

In conversation with Dr. Andrea Ladinig (University of Veterinary Medicine Vienna, Austria) and Dr. Greg Stevenson (Iowa State University, USA) about investigations of genetics and vaccination to combat more virulent strains of the PRRS virus. 
(Running time: 23 minutes) 

PRRS: Hotter types produce more virus

“Peak titres can show 1,000 times more virus in blood serum with higher virulence strains”

In conversation comparing American and European views of high-virulence PRRS strains, Dr. Greg Stevenson (Iowa State University, USA) and Dr. Andrea Ladinig (University of Veterinary Medicine Vienna, Austria) describe marked differences in replication, in ability to cross the placenta before the third trimester of gestation and in severity of lung damage where these so-called hotter strains occur.
                                     (Running time: 33 minutes)

PRRS: Gilt entry holds the key to herd stability

“The tricky part of herd immunisation is how you introduce your gilts”

Our second podcast with Dr. Poul Henning Rathkjen of Boehringer Ingelheim Nordic covers the herd management procedures that support effective vaccination against PRRS.
(Running time: 19 minutes) 

PRRS: Sequencing in practice

“Like a cloud that is spreading, the diversity of the virus is becoming bigger and bigger”

We hear from Dr. Poul Henning Rathkjen of Boehringer Ingelheim Nordic about the practical value of sequencing to identify a PRRS virus and indicate its origins.
(Running time: 28 minutes) 

PRRS: Panel picks latest research award winners

“We would like to have more proposals from the field”

Professor Enric Mateu (UAB/CRESA, Barcelona, Spain) chairs the five-person independent expert panel that judges applications for the annual European PRRS research awards sponsored by Boehringer Ingelheim. Here he outlines the three winning proposals in the latest round, each receiving a 25,000 Euros award  and invites more veterinary practitioners to consider applying. 
(Running time: 26 minutes) 

APP: Profile of a rapid killer

“It’s like an invading army in the lung, pigs can die from it within a day of infection”

This third podcast interviewing Dr. Greg Stevenson (veterinary diagnostic pathologist at Iowa State University, USA) deals with the incredibly rapid, virulent respiratory disease in pigs caused by Actinobacillus pleuropneumoniae or APP.    (Running time: 17 minutes)

M.hyo and SIV: Contrasts for speed of spreading

“Compared to PRRS, Mycoplasma is very slowly transmitted while influenza is a highly transmissible agent” 

After our separate podcast with him about PRRS, veterinary diagnostic pathologist Dr. Greg Stevenson discusses coughing in pigs due to Mycoplasma hyopneumoniae and the type-A swine influenza virus.
(Running time: 33 minutes) 

PRRS: The sound of the cough

“Coughs sound different because of subtle differences in the ways that organisms cause damage to the respiratory tract”

Pigs with PRRS have a distinctive cough due to the type of damage inflicted by the virus, we hear from Dr. Greg Stevenson (veterinary diagnostic pathologist at Iowa State University, USA). Combined with information on the number of pigs in a barn that develop coughing over time, this helps us to recognise PRRS and differentiate it from other respiratory pathogens.    (Running time: 38 minutes)