Betekenis van:
virulence
virulence
Zelfstandig naamwoord
- virulentie
- extreme harmfulness (as the capacity of a microorganism to cause disease)
"the virulence of the plague"
Synoniemen
Hyperoniemen
Voorbeeldzinnen
- Aetiology and virulence
- Reversion to virulence of attenuated vaccines
- Reversion to virulence shall be investigated with the master seed.
- interference with the virulence of a pathogenic target organism,
- the properties of viruses, in particular, can change rapidly, including their virulence.
- Methods to prevent loss of virulence of seed stock of the micro-organism
- Infections with avian influenza viruses in domestic poultry cause two main forms of that disease that are distinguished by their virulence.
- Virulence: Measurement of the degree of disease producing ability of a micro-organism as indicated by the severity of the disease produced.
- The virulence for chickens of influenza A viruses isolated from birds must be estimated using the intravenous pathogenicity index (IVPI) test which must be carried out as follows:
- The clinical signs are very variable and are influenced by factors such as the virulence of the infecting virus, the species affected, age, sex, concurrent diseases and environment.
- Infection with avian influenza viruses in domestic poultry causes two main forms of that disease that are distinguished by their virulence.
- The current definition of HPAI, allows the molecular identification of virulence factors and confirms the use of molecular techniques in the diagnosis of AI.
- la souche présente un déficit stable en facteurs génétiques de virulence ou ait subi des mutations stables dont on sait qu'elles atténuent suffisamment la virulence (tests de pathogénicité, analyse génétique, sondes génétiques, détection de phages et de plasmides, cartographie de restriction, séquençage, sondes protéiques), et que son innocuité soit suffisamment attestée.
- The pathogenicity test must be performed as final confirmation of a diagnosis of C. m. subsp. sepedonicus and for assessment of virulence of cultures identified as C. m. subsp. sepedonicus:
- Reversion to virulence shall be investigated with the master seed. If the master seed is not available in sufficient quantity the lowest passage seed used for the production shall be examined.