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Volume 9, Number 7—July 2003

Research

Amoeba-Resisting Bacteria and Ventilator-Associated Pneumonia

Bernard La Scola*, Ioanna Boyadjiev*†, Gilbert Greub*, Atieh Khamis*, Claude Martin†, and Didier Raoult*†Comments to Author 
Author affiliations: *Unité des Rickettsies, Marseille, France; †Hôpital Nord, Marseille, France

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Table 5

Antibody titers of 12 serum samples with seroconversion to at least one of the bacteria isolated in the intensive care unita

Case Wk of sampling Bosea massiliensis
Legionella anisa
L. quinlivanii
Afipia broomeae
IgG IgM IgG IgM IgG IgM IgG IgM
1a
1


<1:50
<1:25




4


1:50
1:100




7


1:800
1:50




2 a
1
<1:50
<1:25







3
1:400
1:100






7
1


<1:50
<1:25





3


<1:50
1:200




8
1




<1:50
<1:25



3




1:200
1:800


9
1
<1:50
<1:25
<1:50
<1:25





3
1:400
1:50
1:50
1:400





5
1:50
1:25
1:800
1:50




11
1
<1:50
<1:25







5
1:50
1:50






12
1


<1:50
<1:25





3


1:400
1:50




13
1






<1:50
<1:25

3






1:50
<1:25

5






1:100
<1:25

7






1:200
<1:25
19
1


<1:50
<1:25





3


1:400
<1:25




22
1
<1:50
<1:25







3
1:200
1:50






23
1
<1:50
<1:25







5
1:400
1:25






28
1
<1:50
<1:25







3
1:400
1:25






5 1:200 1:25

aPatients with positive PCR results in bronchoalveolar lavage samples (patient 1, L. anisa; Patient 2, B. massiliensis); Ig, immunoglobulin. All patients were sampled at admission (wk 1); titers in bold are those greater than or equal to defined cutoff titers (Table 4).

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