Project 13: MRSA-transmissie tijdens transport en in het slachthuis



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Bedrijf A Bedrijf B Bedrijf C Bedrijf D Totaal

bedrijfsgrootte (# zeugen) 160 160 320 380

monsterdatum 16/07/2008 27/02/2009 11/03/2009 08/04/2009

-koppelgrootte afgevoerde varkens 60 65 27 63

# bemonsterde varkens 30 30 27 30 117

geslacht van de varkens Ƃƃ ƃ ƃ Ƃ

id slachthuis I II III III

-koppels bijgeladen ja ja ja nee

-# uren tussen op- en uitladen 5 5 4 2

-# uren tussen uitladen en slachten 9 1,75 11,5 2

-totale tijd tussen opladen en slachten 14 6,75 15,5 4

-# varkens gelijktijdig aanwezig in wachtruimte 1000 500 800 500

soort hokafscheidingin wachtruimte open dicht open open

-# varkens MRSA-positief bij opladen 0 0 0 0 0

# varkens MRSA-positief bij uitladen 0 0 7 5 12

# varkens MRSA-positief op steektafel 2 13 27 28 70

% MRSA-positieve varkens op steektafel 6,7 43,3 100 93,3 59,8

# monsters MRSA-positief uit vrachtwagen (totaal) 0 (3) 0 (5) 1 (5) 1 (5) 2 (18) # monsters MRSA-positief uit wacthruimte (totaal) 0 (3) 4 (5) 1 (5) 1 (5) 6 (18)

Tabel A12.2 Associatie tussen MRSA-status van omgeving en varkens die hierin verblijven

variabele categorie varkens

n % % MRSA- positief OR 95% btbhi P-exact vrachtwagen positief 57 48,7 21,1 21,7 3,4-' 0,0002 negatief 60 51,3 0 ref - -wachtruimte positief 87 74,4 78,2 48,0 10,6-452,2 <0,0001

(alle varkens) negatief 30 25,6 6,7 ref -

-wachtruimte positief 30 50,0 43,3 10,3 2,0-105,0 0,0021

(varkens negatief na aankomst) negatief 30 50,0 6,7 ref -

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bedrijf spa-type in varkens (n)

bij uitladen op steektafel

spa-type in omgeving (n) vrachtwagen slachthuis resistentiepatroon A t1457 (2) - - EClT (2) B t108 (6) - t011 (3) T (1)a t011 (6) t108 (1) t2330 (1) C t108 (4) t108 (8) t108 (1) t011 (1) EClT (1)b t011 (3) t011 (18) t2123 (1) D t1457(5) t108(3) t1457(1) t011(1) ? 1 t011(22) t1457 (3) E=erythromycine; Cl=clindamycine; T=tetracycline

a _{van isolaat met spa-type t108 geïsoleerd uit varken op steektafel} b _{van isolaat met spa-type t108 geïsoleerd uit varken bij uitladen}

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