Challenges and lessons learned from implementing a risk-based approach to school advice and closure during the containment phase of the 2009 influenza pandemic in the West Midlands, England

OBJECTIVE

School closure as a social distancing measure was used in some countries during the initial phases of the influenza A(H1N1)pdm09 pandemic. The objective of this paper is to describe the use of a risk-based approach to public health interventions for schools during the 'containment phase' of the pandemic and to describe lessons learnt.

METHODS

The development of a framework for risk assessment and decision-making to determine school closures in the West Midlands, England, during the 'containment phase' of influenza A(H1N1)pdm09 pandemic is described.

RESULTS

Using the framework developed during the 'containment phase', assessments were conducted for 344 educational institutions who reported confirmed cases or 'particularly high absenteeism'. Of these, 209 (60%) had confirmed cases and 65 were closed, mainly for public health or operational reasons. Schools were closed on an individual basis, during the most intense period of the pandemic and for an average period of six days (maximum 11 days). The risk-based approach evolved as experience and knowledge of influenza A(H1N1)pdm09 pandemic virus increased, however some decisions were difficult to communicate to parents, schools and stakeholders particularly when the number of schools affected escalated and the pandemic response phases changed.

CONCLUSION

The management of school closures is an 'uncertain art'. Numerous challenges and lessons were identified in attempting, during the containment phase of the influenza A(H1N1)pdm09 pandemic, to ensure consistency and transparency in an increasingly complex process. The overall approach described could be further developed to improve decision-making for infectious diseases in schools.

Changes in HIV testing rates among patients with tuberculosis in a large multiethnic city in the UK

Screening for HIV in patients with tuberculosis (TB) is essential, as HIV/TB co-infection has an adverse prognosis. We compared HIV testing practices in 2005 and 2008/09 in the Birmingham and Solihull region of the UK and evaluated the trends before and after the implementation of the British HIV Association (BHIVA) HIV testing guidelines (2008). A total of 371 TB patients in 2005 and 407 in 2008/09 were included. Demographics across both cohorts were similar. HIV testing increased from 14% in 2005 to 43% in 2008/09. Patients aged ≥55 years and Asian patients were less likely to be tested in 2005 and those aged ≥35 years in 2008/09. An increased rate of HIV testing was seen in all patient categories in 2008/09 compared with 2005. The odds of being tested was high in black African patients (compared with white ethnicity) in both years and increased among black Africans and African Caribbeans between both time points, albeit with wide confidence intervals (CIs). No significant difference in HIV testing was found in 2008/09 before and after the publication of the BHIVA guidelines. This study underlines the importance of continued efforts to minimize the significant gaps in HIV testing rates in TB services.

National outbreak of Salmonella Enteritidis phage type 14b in England, September to December 2009: case-control study

We conducted an unmatched retrospective case–control study to investigate an upsurge of non-travel-related sporadic cases of infection with Salmonella enterica subsp. enterica serotype Enteritidis phage type 14b with antimicrobial resistance to nalidixic acid and partial resistance to ciprofloxacin (S. Enteritidis PT 14b NxCp(L)) that was reported in England from 1 September to 31 December 2009. We analysed data from 63 cases and 108 controls to determine whether cases had the same sources of infection as those found through investigation of 16 concurrent local foodborne outbreaks in England and Wales. Multivariable logistic regression analysis adjusting for age and sex identified food consumption at restaurants serving Chinese or Thai cuisine (odds ratio (OR): 4.4; 95% CI: 1.3–14.8; p=0.02), egg consumed away from home (OR: 5.1; 95% CI: 1.3–21.2; p=0.02) and eating vegetarian foods away from home (OR: 14.6; 95% CI: 2.1–99; p=0.006) as significant risk factors for infection with S. Enteritidis PT 14b NxCp(L). These findings concurred with those from the investigation of the16 outbreaks, which identified the same Salmonella strain in eggs from a specified source outside the United Kingdom. The findings led to a prohibition of imports from this source, in order to control the outbreak.

National outbreak of Salmonella Enteritidis phage type 14b in England, September to December 2009: case–control study

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