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Volume 9, Number 7—July 2003

Dispatch

Probable Dengue Virus Infection Among Italian Troops, East Timor, 1999–2000

Mario Stefano Peragallo*Comments to Author , Loredana Nicoletti†, Florigio Lista*, Raffaele D’Amelio‡, and for The East Timor Dengue Study Group
Author affiliations: *Centro Studi e Ricerche Sanità e Veterinaria Esercito, Rome, Italy; †Istituto Superiore di Sanità, Rome, Italy; ‡Stato Maggiore della Difesa and Università “La Sapienza,” Seconda Facoltà di Medicina, Rome, Italy

Main Article

Table 3

Risk factors associated with probable dengue (univariate analysis)a

Demographic and risk factors No. cases of probable DF/
no. soldiers exposed (%) OR (95° CI) p valueb
Age, <26 y
Yes
No
10/124 (8.1)
6/117 (5.1)
1.62
(0.51 to 5.61)
0.26
Lower rank (enlisted men vs. NCOs/Officers)
Yes
No
9/145 (6.2)
7/96 (7.3)
0.84
(0.27 to 2.76)
0.47
Previous deployments in dengue-endemic areas
Yes
No
3/44 (6.8)
13/197 (6.6)
1.04
(0.18 to 4.01)
0.59
YFV vaccination
Yes
No
5/102 (4.9)
11/139 (7.9)
0.60
(0.16 to 1.95)
0.26
JEV vaccination
Yes
No
9/219 (4.1)
7/22 (31.8)
0.09
(0.03 to 0.34)
<0.01
Night guard at least once a week
Yes
No
6/142 (4.2)
10/99 (10.1)
0.39
(0.11 to 1.25)
0.06
Skin repellents, regular use (at least once a day)
Yes
No
9/209 (4.3)
7/32 (21.9)
0.16
(0.05 to 0.56)
<0.01
Use of permethrin-treated uniform
Yes
No
9/186 (4.8)
7/55 (12.7)
0.35
(0.11 to 1.17)
0.05
Bed nets, regular use (every night)
Yes
No
9/223 (4.0)
7/18 (38.9)
0.07
(0.02 to 0.26)
<0.01
On duty in operational vs. logistic units
Yes
No 15/179 (8.4)
1/62 (1.6) 5.55
(0.82 to 238.67) 0.05

aDF, dengue fever; OR, odds ratio; CI, confidence interval; NCOs, noncomissioned officers; YFV, yellow fever virus; JEV, Japanese encephalitis virus.


bFisher exact test.

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1The East Timor Dengue Study Group: Roberto Biselli, Glauco Calì, Maria Rosaria Capobianchi, Maria Grazia Ciufolini, Raffaele D’Amelio, Paolo Di Zenzo, Giovanni Fascia, Cristiano Fiorentini, Alberto Germani, Michele Giattino, Giuseppe Ippolito, Florigio Lista, Fabio Magurano, Antonella Marchi, Loredana Nicoletti, Mario Stefano Peragallo, Alessandro Polidori, Giuseppe Sarnicola, and Antonio Stella.

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