Anne Tunbridge

Chickenpox in adults – Clinical management

Acute varicella zoster virus (VZV) infection, or chickenpox, is still perceived by many as a mild infection of childhood. However, chickenpox is increasingly common in adults and adolescents who together with immunosuppressed individuals are at a higher risk of severe infection. Antiviral therapy is available which both ameliorates symptoms and decreases the severity of chickenpox if administered early in the course of the infection. Passive immunisation with varicella zoster immunoglobulin (VZIG) may prevent or attenuate infection following exposure to varicella of an immunocompromised or pregnant individual or a neonate. Active immunisation is available and is universal in many developed countries. This review reflects current best practice in management of chickenpox in adults by specialist physicians in the UK. The accompanying flowchart has been formulated to guide emergency physicians and general practitioners through the decision-making process regarding treatment and admission for specialist care.

Human immunodeficiency virus (HIV) in older people

The number of older people living with human immunodeficiency virus (HIV) in the UK is rising. Older people are at risk of acquiring HIV infection for a multitude of reasons. This, combined with effective HIV treatment which has significantly prolonged life expectancy, means that health care professionals working in the UK can expect to see increasing numbers of older people with HIV infection. In this review article, we summarise the epidemiology of HIV amongst older people, including data from our local cohort in the city of Sheffield, UK. We discuss specific and practical issues in older patients including why older people are at risk, how to make a diagnosis and the importance of doing so early, guidelines for HIV testing and an update on anti-retroviral therapy including drug interactions and side effects.

Provision of care for Ebola

According to WHO, more than 5000 people have died from Ebola, including 240 health workers. We are deeply concerned about the devastating effect of Ebola on reproductive health in Guinea, Liberia, and Sierra Leone in the context of continuous deterioration of socioeconomic conditions and general health in aff ected countries. The indirect negative effect of Ebola on reproductive health stems mainly from the desertion of already understaffed health facilities by health-care workers who are fearful of contracting Ebola. This fear is further increased because most reproductive health life-saving interventions include handling blood or bodily fluids from patients whose Ebola status is often unknown and health staff often do not have access to appropriate protection. Most referral maternity wards in the three most affected countries (Guinea, Liberia, and Sierra Leone) do not have equipment to do real-time screening for Ebola (eg, PCR), which could lead to the denial of care for women suspected to be pregnant. Additionally, the absence of providers offering relevant services, the inability to differentiate between Ebola and other febrile diseases, and the fear of contracting Ebola at a health facility can prevent users seeking reproductive health services. Statistics from Matam maternity hospital in Conakry, Guinea, show a substantial drop in attendance between March, 2014, and September, 2014, compared with 2013 (fi gure). A decrease in paediatric or maternal admissions because of fear of contracting Ebola has also been reported by Médecins Sans Frontières in Sierra Leone. We are concerned that women in need of reproductive health care because of pregnancy, childbirth, and post-partum related complications, including haemorrhage, eclampsia, obstructed labour, and abortion, will not have necessary and even life-saving care and attention. United Nations Population Fund estimates that 15% of the 800 000 women who will give birth in the next 12 months in Guinea, Liberia, and Sierra Leone could die of complications because of inade quate emergency obstetric care, and thousands of others could develop devastating pathological conditions, such as obstetric fistula. Increased support to fight Ebola is needed in Guinea, Liberia, and Sierra Leone coupled, with specific attention to reproductive health services. Adequate measures, including health system strengthening and community mobilisation coupled with an enabling environment for provision of emergency obstetric care, need to be put in place urgently to avoid devastating short-term and long-term effects for thousands of women.

‘VIOLET’: a fluorescence-based simulation exercise for training healthcare workers in the use of personal protective equipment

Summary Background Healthcare workers caring for patients with high-consequence infectious diseases (HCIDs) require protection from pathogen exposure, for example by wearing personal protective equipment (PPE). Protection is acquired through the inherent safety of the PPE components, but also their safe and correct use, supported by adequate training and user familiarity. However, the evidence base for HCID PPE ensembles and any associated training is lacking, with subsequent variation between healthcare providers. Aim To develop an evidence-based assessment and training tool for evaluating PPE ensembles and doffing protocols, in the assessment of patients with suspected HCIDs. Methods VIOLET (Visualising Infection with Optimised Light for Education and Training) comprises a healthcare mannequin adapted to deliver simulated bodily fluids containing UV-fluorescent tracers. On demand and remotely operated, the mannequin projectile vomits (blue), coughs (red), has diarrhoea (yellow) and is covered in sweat (orange). Wearing PPE, healthcare staff participate in an HCID risk assessment and examination of the ‘patient’, thereby becoming exposed to these bodily fluids. Contamination of PPE is visualized and body-mapped under UV light before and after removal. Observational findings and participant feedback, around its use as a training exercise, is also recorded. Findings Significant contamination from different exposure events was seen, enabling evaluation of PPE and doffing procedures used. Observational data and participant feedback demonstrated its strengths and success as a training technique. Conclusion Simulation exercises using VIOLET provide evidence-based assessment of PPE ensembles, and are a valuable resource for training of healthcare staff in wearing and safe doffing of PPE.

Musculoskeletal manifestations of Ebola virus

The 2014 West African Ebola virus disease outbreak shocked the world as it swept through the region leaving Guinea, Liberia and Sierra Leone struggling to gain control. As the largest Ebola virus disease outbreak to date, there are more survivors in its wake than ever before, with a spectrum of health problems requiring management. Here we review various musculoskeletal manifestations of the virus that can occur both during and after the infection, and consider possible pathogenesis.

A unified personal protective equipment ensemble for clinical response to possible high consequence infectious diseases: A consensus document on behalf of the HCID programme

Summary The importance of appropriate personal protective equipment (PPE) as a component of healthcare worker (HCW) protection was highlighted during the Ebola virus disease (EVD) outbreak in West Africa. The large number of HCW deaths in Africa was in part due to lack of resources or prior training in PPE usage. As part of the Ebola legacy, the High Consequence Infectious Disease (HCID) programme was initiated by NHS England and Public Health England (PHE) to improve preparedness for Ebola and other infections that not only endanger the life of the patient, but also pose particular dangers to HCWs. A systematic review identified national standardisation of PPE protocols as a priority, but recognised that a lack of safety data limited the ability to mandate any one protocol. A simulation-based exercise was developed to assess the safety of PPE ensembles in use in the UK during first assessment of a patient with a possible HCID. A mannequin was adapted to expose volunteer HCWs to synthetic bodily fluids (vomit, sweat, diarrhoea and cough), each with a different coloured fluorescent tracer, invisible other than under ultraviolet (UV) light. After exposure, HCWs were examined under UV lights to locate fluorescent contamination, and were screened again after removing PPE (doffing) to detect any personal contamination. The exercise was videoed, allowing retrospective analysis of contamination events and user errors. The simulation testing identified significant HCW contamination events after doffing, related to protocol failure or complications in PPE doffing, providing conclusive evidence that improvements could be made. At a workshop with an expert stakeholder group, the data were examined and a unified PPE ensemble agreed. This ensemble was then tested in the same simulation exercise and no evidence of any HCW contamination was seen after doffing. Following further review by the working group, a consensus agreement has been reached and a unified ‘HCID assessment PPE’ ensemble, with accompanying donning and doffing protocols, is presented here.