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Volume 10, Number 5—May 2004

Research

Antimicrobial Resistance in Commensal Flora of Pig Farmers

Hélène Aubry-Damon*, Karine Grenet†, Penda Sall-Ndiaye‡, Didier Che*, Eugenio Cordeiro*, Marie-Elisabeth Bougnoux¶, Emma Rigaud‡, Yann Le Strat*, Véronique Lemanissier*, Laurence Armand-Lefèvre†, Didier Delzescaux§, Jean-Claude Desenclos*, Michel Liénard‡, and Antoine Andremont†Comments to Author 
Author affiliations: *National Institute for Public Health, Saint-Maurice, France; †Bichat Hospital, Assistance Publique, Paris, France; ‡National Medical Insurance System for Agriculture, Bagnolet, France; §National Federation of Cattle and Pig Raisers, Paris, France; ¶Hôpital Ambroise Paré, Paris, France

Main Article

Table 3

Pharyngeal isolation of selected microorganisms in pig farmers and nonfarmersa,b

Microorganisms Prevalence, no. (%)
Prevalence ratio
CI 95%
p value
Pig farmers Nonfarmers
Streptococcus pneumoniae
0/112
(0)
3/112
(2.7)
NA
NA
0.25
Haemophilus influenzae
6/112
(5.4)
5/112
(4.5)
1.20
0.38 to 3.82
1.00
Enterobacteria
1/112
(0.9)
2/112
(1.8)
0.50
0.05 to 5.44
1.00
Yeastsc
1/112
(0.9)
0/112

NA
NA
0.25
β-hemolytic streptococcid
11e/112
(9.8)
9f/112
(8.0)
1.22
0.53 to 2.83
0.82
NGSg






Any
Resistant to
108/112
(96.4)
100/112
(89.3)
1.08
1.00 to 1.16
0.06
Ampicillin
48/108
(44.4)
22/100
(22.0)
2.02
1.32 to 3.09
<0.01
Macrolides 108/108 (100.0) 100/100 (100.0) NA NA 1.00

aMatched pharyngeal samples were available for 112 pig farmer–nonfarmer pairs.
bCI, confidence interval; NA, not applicable.
cCandida albicans.
dSeveral species were present in some study participants.
eGroup A Streptococcus:1, group C: 5, S. anginosus: 3, S. intermedius: 1, S. constellatus: 4.
fGroup A Streptococcus: 1, group C: 5, S. anginosus: 3, S. intermedius: 1, S. constellatus: 3.
gNongroupable streptococci.

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