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Why is the PRRS-virus so dangerous?
Phagocytes at work:
• A phagocyte attacks a bacterium and destroys it
• Important information required for the animal to express the appropriate immunological response is collected by the phagocyte
• The correct active immune response is induced
Phagocyte = a macrophage attacks bacteria
Right here the PRRS-virus invades:
• The PRRS-virus infects and destroys the phagocytes
• No information about the invading pathogen can be collected
• PRRS-virus weakens the immune response
• Pigs fall ill due to secondary viral/bacterial infections
Phagocytes affected by PRRS-virus
