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Table 5 Summary of main associations with age at infection

From: Cytomegalovirus, Epstein-Barr virus and varicella zoster virus infection in the first two years of life: a cohort study in Bradford, UK

   CMV EBV VZV
Associated with earlier infection White British • household sizec
• breastfeeding >6mb [16, 32, 42]
• formal childcare in 1st yrb [32]
• not owner-occupied householdb [11]
• informal childcare <1165 hrsc • birth orderb [18]
Pakistani • breastfeedingb
• mother born outside UK/Ireland c
• bedroom sharing in 1st yrb [21] • birth orderb
Associated with later infection White British - • mother/baby activities in 1st yra -
Pakistani • birth ordera
• travel outside Europe in 1st yr*b
- • maternal agea
  1. anovel associations
  2. bprevious studies with similar findings (refs)
  3. cexpected association
  4. *assuming this reflects higher socio-economic position