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Volume 16, Number 3—March 2010

Research

Chikungunya Virus Infection during Pregnancy, Réunion, France, 2006

Xavier FritelComments to Author , Olivier Rollot, Patrick Gérardin, Bernard-Alex Gaüzère, Jacques Bideault, Louis Lagarde, Barbara Dhuime, Eric Orvain, Fabrice Cuillier, Duksha Ramful, Sylvain Sampériz, Marie-Christine Jaffar-Bandjee, Alain Michault, Liliane Cotte, Monique Kaminski, Alain Fourmaintraux, and the Chikungunya-Mère-Enfant Team
Author affiliations: Centre Hospitalier Régional de la Réunion, Saint-Denis, France (X. Fritel, P. Gérardin, B.-A. Gaüzère, E. Orvain, F. Cuillier, D. Ramful, S. Sampériz, M.-C. Jaffar-Bandjee, A. Michault, L. Cotte, A. Fourmaintraux); Centre d’Investigation Clinique–Epidémiologie Clinique de la Réunion, Saint-Denis (O. Rollot, P. Gérardin); Institut National de la Santé et de la Recherche Médicale, Villejuif, France (X. Fritel, P. Gérardin, M. Kaminski); Centre Hospitalier Intercommunal de Saint-Benoit-Saint-André, Saint-Benoit, France (J. Bideault); Centre Hospitalier Gabriel-Martin, Saint-Paul, France (L. Lagarde); Clinique Sainte-Clotilde, Saint-Denis (B. Dhuime); Université Pierre et Marie Curie 6, Paris, France (X. Fritel, P. Gérardin, M. Kaminski)

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Table 2

Characteristics of women infected and not infected with chikungunya virus during pregnancy, Réunion, France, 2006*

Characteristic Infected, no. (%), n = 658 Not infected, no. (%), n = 655 p value†
Born in Réunion
Yes 545 (84.1) 510 (79.2)
No
103 (15.9)
134 (20.8)
0.02
Education
Primary school 331 (52.2) 214 (34.3 <0.0001
High school 198 (31.2) 200 (32.1)
University
105 (16.6)
209 (33.6)

Marital status
Lives alone 252 (39.0) 207 (32.0) 0.008
Lives with partner
394 (61.0)
440 (68.0)

History of diabetes
Yes 17 (2.6) 14 (2.1)
No
641 (97.4)
641 (97.9)
0.59
History of hypertension
Yes 23 (3.5) 27 (4.1)
No
635 (96.5)
627 (95.9)
0.55
Previous pregnancies <22 wks
Yes (>1) 273 (41.6) 258 (39.5)
No
384 (58.4)
395 (60.5)
0.45
Mean parity 1.4 (1.6) 1.1 (1.4) <0.0001
0 216 (32.9) 278 (42.7) 0.0004
1 199 (30.3) 181 (27.8)
2 110 (16.8) 106 (16.3)
>3
131 (20.0)
86 (3.2)

Previous stillbirth or neonatal death
Yes 22 (3.3) 12 (1.8)
No
636 (96.7)
643 (98.2)
0.08
Previous preterm delivery
Yes 44 (6.7) 27 (4.1)
No
614 (93.3)
626 (95.9)
0.04
Previous child >2,500 g
Yes 70 (10.7) 55 (8.4)
No
587 (89.3)
598 (91.6)
0.17
Previous cesarean
Yes 71 (10.8) 66 (10.1)
No
587 (89.2)
586 (89.9)
0.69
Mean age at delivery, y 28.6 (6.9) 28.8 (6.4) 0.52
<20 71 (10.8) 69 (10.5) 0.94
20–29 309 (47.0) 303 (46.3)
>30
278 (42.2)
283 (43.2)

Mean body mass index, kg/m2 24.7 (5.9) 23.4 (5.1) <0.0001
<25 390 (60.8) 454 (71.5) <0.0001
25–29 137 (21.3) 113 (17.8)
>30
115 (17.9)
68 (10.7)

Center
1 165 (25.1) 188 (28.7) <0.0001
2 196 (29.8) 153 (23.4)
3 62 (9.4) 71 (10.8)
4 21 (3.2) 9 (1.4)
5 118 (17.9) 182 (27.8)
6 96 (14.6) 52 (7.9)

*Women infected before pregnancy were considered not infected during pregnancy.
†By Wilcoxon rank-sum test for continuous variables and χ2 test for nominal variables.

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