Biogeographical origin and varicella risk in the adult immigration population in Catalonia, Spain (2004-2006)

• DOI: 10.2807/ese.14.37.19332-en
• Publication Date: 2017-10-04T10:08:40Z
• Authors: L Valerio; J M Escribà; J Fernández-Vázquez; C Roca; J Milozzi; L Solsona; I Molina
• Keywords: Attack rate; Holarctic; Rate ratio

Immigrants to the European Union may have a higher susceptibility varicella-zoster virus primo-infection than indigenous population. There is no evidence as yet that this caused by genetic or social factors. Therefore, could be due lesser transmission of in their ecosystems origin. A multicentre observational study was performed from July 2004 June 2006 four primary healthcare centres Catalonia, Spain, monitoring varicella incidences and comparing standardised incidence rates rate ratios among different populations classified according biogeographical origin (holarctic, Asian paleotropical, African paleotropical neotropical). Overall, 516 cases were recorded. The per 1,000 inhabitants year were: holarctic: 2.17 (95% confidence interval (CI): 1.95-2.39); autochthonous 2.26 CI: 2.03-2.49); immigrants 3.59 2.92-4.26); neotropical 4.50 3.28-5.71); non-holarctic 5.38 4.27-6.14); 7.03 4.77-9.28); 7.05 1.12-23.58). difference population greatest (standardised ratio = 2.07 1.61-2.64) 4.5 excess year) 3.24 2.47-4.11) 9.6 year). Biogeographical therefore account for vulnerability certain immigrant varicella, particular those (Indostan Southest Asia) (South America Caribbean) ecosystems. Vaccination at high risk (fertile women, workers) recommendable.