The Lancet Infectious Diseases
Nov 2015 Volume 15 Number 11 p1243-1360
http://www.thelancet.com/journals/laninf/issue/current
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Comment
Polio eradication: inching forward, with safety nets
Beth D Kirkpatrick, Josyf C Mychaleckyj
Summary
By mid-2015, WHO-reported cases of paralytic disease caused by polioviruses had reached a new low: only 34 cases were caused by wild polioviruses and nine cases were due to circulating vaccine-derived poliovirus (cVDPV).1 In light of this progress, WHO’s Polio Endgame Strategy is moving into a pivotal new stage, focusing on global withdrawal of a vaccine component from primary immunisation schedules. This plan will minimise the time to reach eradication, while maintaining the protection of children in case of disease re-emergence.
Comment
Near full control of human papillomavirus vaccine types
Joakim Dillner
Published Online: 19 July 2015
The Lancet Infectious Diseases, Eric Chow and colleagues1 report on the near elimination of the major human papillomavirus (HPV) types 6, 11, 16, and 18 after introduction of vaccination against these types in Australia when analysed in high-risk women. The authors use the innovative strategy of establishing HPV prevalence in women who are chlamydia positive. Traditional monitoring strategies would typically enrol from the general population, which is both cumbersome and expensive, and potentially biased because volunteering women would tend to be low risk, therefore possibly missing HPV circulation in high-risk core groups.
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Ebola: missed opportunities for Europe–Africa research
Giuseppe Ippolito, Simone Lanini, Philippe Brouqui, Antonino Di Caro, Francesco Vairo, Salim Abdulla, Francesco Maria Fusco, Sanjeev Krishna, Maria Rosaria Capobianchi, Henry Kyobe-Bosa, David J M Lewis, Vincenzo Puro, Roman Wolfel, Tatjana Avsic-Zupanc, Osman Dar, Peter Mwaba, Matthew Bates, David Heymann, Alimuddin Zumla
Summary
The current unprecedented Ebola virus disease outbreak in parts of west Africa, which has caused more than 11 200 deaths, has emphasised how the medical and scientific communities lack specific pathways for tackling relevant logistical, design, and ethical issues for assessment of novel diagnostics, treatments, and vaccines through implementation of appropriate clinical trials.1,2 The phenomenal outbreak arose because of several weaknesses in local, regional, and international public health responses, which delayed provision and implementation of effective intervention.
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Post-exposure prophylaxis against Ebola virus disease with experimental antiviral agents: a case-series of health-care workers
Michael Jacobs, Emma Aarons, Sanjay Bhagani, Ruaridh Buchanan, Ian Cropley, Susan Hopkins, Rebecca Lester, Daniel Martin, Neal Marshall, Stephen Mepham, Simon Warren, Alison Rodger
Summary
Background
Although a few international health-care workers who have assisted in the current Ebola outbreak in west Africa have been medically evacuated for treatment of Ebola virus disease, more commonly they were evacuated after potential accidental exposure to Ebola virus. An urgent need exists for a consensus about the risk assessment of Ebola virus transmission after accidental exposure, and to investigate the use of post-exposure prophylaxis (PEP). Experimental vaccines have occasionally been used for Ebola PEP, but newly developed experimental antiviral agents have potential advantages. Here, we describe a new method for risk assessment and management of health-care workers potentially exposed to Ebola virus and report the use of experimental antiviral therapies for Ebola PEP in people.
Methods
We devised a risk assessment and management algorithm for health-care workers potentially exposed to Ebola virus and applied this to eight consecutive individuals who were medically evacuated to the UK from west Africa between January, and March, 2015. PEP with antiviral agents was given to health-care workers assessed to have had substantial risk exposures to Ebola virus. Participants were followed up for 42 days after potential exposure.
Findings
Four of eight health-care workers were classified as having had low risk exposures and managed by watchful waiting in the community. None of these health-care workers developed Ebola virus disease. The other four health-care workers had intermediate or maximum risk exposures and were given PEP with antiviral agents. PEP was well tolerated with no serious adverse effects. None of these four health-care workers, including two with maximum risk exposures from penetrating injuries with freshly used hollow-bore needles, developed Ebola virus disease.
Interpretation
Standardised risk assessment should be adopted and consensus guidelines developed to systematically study the efficacy and safety of PEP with experimental agents. New experimental antiviral treatments are a viable option for PEP against Ebola.
Funding
Royal Free London NHS Foundation Trust.