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Samenvatting H5 virulentie en vatbaarheid

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H5 microbiologie zelfgeschreven cursus/samenvatting !! best in bundel te kopen

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Uploaded on
October 1, 2025
Number of pages
3
Written in
2025/2026
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⚖️
5 virulentie en vatbaarheid
gastheer reageert op microbe: afweer; immunologie, variabiliteit ⇒ vatbaarheid
vr colonisatie
microbe reageert op gastheer: microbiologie, stam, adaptief vermogen en
virulentie
ziekmakend vermogen isolaat bij ‘standaard’ gastheer = virulentie
kolonisatie (en zelfs infectie) is een ijsberg in kiem-gastheerrelatie
Virussen produceren geen toxines, zo vaak ook geen directe celschade →
langer silentieus dan bacteriële infecties, symptomen bij immuunrespons

De kiem
succesvolle kiemen verwekken nauwelijks ziekte of net voldoende ter
facilitatie overdracht, zo zijn pathogenen meestal symptomatisch vr de
verspreiding
integratie in genoom gastheer: > 40% humaan genoom (wrvan 8% HERV)
evolueert meestal sneller dan gastheer
Virulentie
pathogeen = lokken symptomen uit
→ via virulentiefactoren = genen die de pathogene levensstijl mgl
maken
De gastheer
sommige situatie kunnen de harmonieuze relatie met de kiem in gevaar
brengen: neonataal, (iatrogene)trauma, uitputting (behandeling), antibiotica,
etc
→ medisch handelen draagt soms bij aan het optreden van infecties
Kiem-gastheer relatie
De kiem neemt de ruimte in die de gastheer geeft: individuele variatie
kan tijdelijk zijn, al dan niet x pathogenese, of langdurig




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