Avian influenza and vaccination


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Avian influenza and vaccination


The H5N1 outbreak which began in November 2021 kept its grip on the Dutch poultry farming sector throughout 2022. Following the initial outbreak of H5N1 at a layer farm in Zeewolde, the influenza virus was detected at various farms housing all types of poultry held on an industrial scale in the Netherlands, as well as among backyard poultry.

Generally speaking, local increased mortality is the most significant indicator of outbreaks of highly pathogenic avian influenza (HPAI) of subtype H5N1 in (rearing) layers and broilers, and where the clinical signs vary and depend on the stage of the infection. In meat ducks, the main indicator is a decrease in feed intake, while a decline in production is seen as being most characteristic in broiler breeders. Read the whole article in the highlights report poulty of January 2023

In this report you can also find more information on:

  • The use of dead Ms vaccine and the risk for serological Mg monitoring
  • Prevalence study Infectious Bursal Disease
  • Pathogenic O.r. strains once again causing pathological problems
  • Animal health barometer for poultry

Highlights reports poulty

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