Pneumonitis after inhalation of mercury vapours.

A 43-year-old man presented to hospital with pneumonia but only after discharge from hospital did he admit to deliberate prior inhalation of mercury. His pulmonary involvement appeared to resolve almost completely with antibiotics and supportive care. Nevertheless, persisting elevated urinary excretion of mercury required two courses of chelation therapy. No serious systemic sequelae were observed.

The public health response to a case of Lassa fever in London in 2000.

OBJECTIVES: Evaluation of the Department of Health 1996 guidance, the Memorandum on the Management and Control of Viral Haemorrhagic Fevers. METHODS: Description of the public health management in 2000 of the fifth UK patient confirmed to have Lassa fever. RESULTS: Delayed risk categorisation of the patient occurred for a variety of reasons. DH Guidance was followed once infection control advice was sought. Active surveillance of 125 contacts was extremely resource intense, involving over 3000 communications. Self-monitoring by healthcare workers should be considered in future. Advice on use of ribavirin prophylaxis is not included in the Memorandum, nor advice or templates for information sheets for contacts. Information sheets are now available from the Health Protection Agency in the event of future cases. International aspects not adequately addressed include the need for reliable risk assessment to be carried out before patients are medically evacuated from the country of origin, and the steps required to repatriate UK nationals. Effective and efficient communication is required between national and international organisations involved in such incidents. CONCLUSIONS: If guidelines are unclear or impracticable they will not be followed. It is important that lessons are learned and documented and that national guidance be regularly reviewed.

Evaluation of peer review of infection control arrangements for healthcare-associated infection in four acute care trusts in the East of England.

In order to constructively use Department of Health surveillance data to address the issue of healthcare-associated infection, a peer review process investigating infection control arrangements for healthcare-associated infection in acute care trusts was initiated in the East of England. This study set out to evaluate that process and determine if it should be rolled out regionwide. A questionnaire survey of infection control doctors at trusts visited was conducted by telephone. Respondents commented that the peer review process raised the profile of infection control and healthcare-associated infection in participating trusts, and that a review of routine surveillance data was a useful way to initiate discussion about and focus attention on hospital infection control. Respondents felt the forum for discussion of infection control was most beneficial. A peer review process utilising routine surveillance data is of value in addressing issues related to infection control arrangements for healthcare-associated infection in acute care trusts.

Pulmonary tuberculosis among political asylum seekers screened at Heathrow Airport, London, 1995-9.

BACKGROUND: Over 50% of cases of tuberculosis (TB) in the UK occur in people born overseas, and new entrants to the country are screened for TB. A study was undertaken to determine the prevalence and disease characteristics of pulmonary TB in new entrants to the UK seeking political asylum. METHODS: A retrospective analysis of the results of screening 53 911 political asylum seekers arriving at Heathrow Airport between 1995 and 1999 was performed by studying Airport Health Control Unit records and hospital medical records. Outcome measures were chest radiograph abnormalities, sputum smear, culture, and drug resistance data for Mycobacterium tuberculosis. RESULTS: The overall prevalence of active TB in political asylum seekers was 241 per 100 000. There were large variations in prevalences of TB between asylum seekers from different regions, with low rates from the Middle East and high rates from the Indian subcontinent and sub-Saharan Africa. The frequency of drug resistance was high; 22.6% of culture positive cases were isoniazid resistant, 7.5% were multidrug resistant (resistant to both isoniazid and rifampicin), and 4% of cases diagnosed with active disease had multidrug resistant TB. CONCLUSIONS: The prevalence rate of TB in political asylum seekers entering the UK through Heathrow Airport is high and more M tuberculosis isolates from asylum seekers are drug resistant than in the UK population. Extrapolating these figures, it is estimated that 101 political asylum seekers with active pulmonary TB enter the UK every year, of whom about 25 would have smear positive disease.

A large outbreak of cryptosporidiosis associated with a public water supply from a deep chalk borehole. Outbreak Investigation Team.

Three hundred and forty-five confirmed cases were reported in a large waterborne outbreak of cryptosporidiosis in North Thames in the spring of 1997. The descriptive epidemiology, attack rates, a case control study, and the detection of oocysts in the water suggested strongly that the outbreak was associated with drinking unboiled tap water that originated from one deep chalk borehole. The 746,000 people living in the water distribution area were advised to boil their drinking water. Investigations did not reveal how oocysts entered the borehole. This is the first published report of a cryptosporidium outbreak caused by filtered borehole water and we believe it to be the largest outbreak due to groundwater to have been reported. Borehole supplies are regarded as relatively pure sources of water and this outbreak has implications for the future monitoring and treatment of drinking water extracted from boreholes.

Appropriateness of total hip replacement in the United Kingdom.

The paper discusses the use of consensus models in determining the application of Total Hip Replacement surgery. The paper notes the wide national and international variation in use of this procedure but considers it in the broader context of reaching consensus on other surgical interventions.

Criteria for audit of annual reports on the public health: do they exist?

Production of an annual report is a statutory duty of the Director of Public Health; its production uses significant resources. Audit of reports may help in the effective use of these resources. For audit to be performed criteria need to be agreed upon which to set standards. The present study investigated whether Directors of Public Health agree on suitable criteria for the audit of annual health reports. Districts within North East Thames Regional Health Authority were paired; Directors of Public Health, who had produced the most recent report, interviewed each other using a semi-structured questionnaire. Reports were examined for the presence of the 'key indicators' from the common data set. The results show that there was little agreement on what were suitable criteria to evaluate reports. The criteria in the Toolbox produced by the Faculty of Public Health Medicine were thought to be unsuitable because of the diversity of Districts. Effective audit requires agreed criteria and standards but these were not identified. The Faculty criteria were not considered suitable. Directors of Public Health may develop criteria that they consider suitable for audit of their annual report in discussion, focusing upon their objectives in producing an annual report. This should be the first step in the audit process and an integral part of producing an annual report.