The second study of infectious intestinal disease (IID2): increased rates of recurrent diarrhoea in individuals aged 65 years and above

BMC Public Health

Sarah J O’Brien¹  Laura C Rodrigues²  Laura Viviani²  Clarence C Tam³ 

[1] University of Liverpool Institute of Infection and Global Health, National Consortium for Zoonosis Research, Leahurst Campus, Chester High Road, Neston CH64 7TE, South Wirral, UK;Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK;Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore

关键词: Cohort studies;    Elderly populations;    Enteric pathogens;    Infectious intestinal disease;    Diarrhoeal diseases;    Diarrhoea;   

Others  :  1161943
DOI  :  10.1186/1471-2458-13-739

 received in 2013-02-22, accepted in 2013-08-07,  发布年份 2013

【 摘 要 】

Background

Infectious intestinal disease (IID) is a major health and economic burden in high-income countries. In the UK, there are an estimated 17 million IID cases annually, of which 6 million are caused by the 12 most common pathogens. Host factors that influence risk of IID are not well understood.

Methods

We analyzed data from the IID2 Study, a UK cohort that measured IID incidence, to investigate factors associated with recurrent IID. We calculated rates of IID by age group, sex, previous episodes experienced, and socioecomic indicators. We used Cox models to investigate factors associated with recurrent illness.

Results

The rate of IID was five times higher among infants than those aged 65 years and above (hazard ratio, HR = 5.0, 95% CI: 3.1 – 8.0). However, the association between previous IID and a subsequent IID episode was stronger in the elderly. Among those aged 65 years and above, each additional IID episode increased the rate of subsequent IID three-fold (HR = 3.1, 95% CI: 2.5 – 3.7). Among infants, the corresponding increase was 1.7-fold (HR = 1.7, 95% CI: 1.3 – 2.3).

Conclusions

Elderly populations have a high propensity for recurrent IID. More detailed studies are needed to identify vulnerable subgroups and susceptibility factors, and inform adequate control policies among the elderly.

【 授权许可】

   
2013 Tam et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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