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Table 2 Association between individual virus seroconversion and influenza like illness (ILI) during the study period (2009 to 2012)

From: Influenza in long-term Dutch travelers in the tropics: symptoms and infections

Virus

Odds ratioa

95 % CI

p value

A/California/007/09 H1N1pdm

6,2

2.6–14.4

0.000

A/Brisbane/59/07

1,2

0.2–9.3

0.866

A/Brisbane/10/07

3,6

1.1–11.0

0.028

A/Perth/16/09

1,8

0.5–6.2

0.354

B/Florida/4/06

1.0

[−−-]

[−−-]

B/Brisbane/60/08

1.0

[−−-]

[−−-]

  1. aOdds ratio of association between seroconversion with individual virus and complaining of ILI. Univariable logistic regression by virus