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Successful comeback of the single-dose live oral cholera vaccine CVD 103-HgR

Herzog, Christian. (2016) Successful comeback of the single-dose live oral cholera vaccine CVD 103-HgR. Travel medicine and infectious disease, 14 (4). pp. 373-377.

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Official URL: http://edoc.unibas.ch/44590/

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Abstract

Effective and easy to administer cholera vaccines are in need more than ever, for at risk populations and travellers alike. In many parts of the world cholera is still endemic, causing outbreaks and constituting repeatedly serious public health problems. The oral live cholera vaccine CVD 103-HgR (Orochol, Mutachol), the first genetically modified organism (GMO) used as vaccine, was in its time (launched 1993, Switzerland) the ideal cholera vaccine: single-dose, protective efficacy of 80-100% against moderate to severe cholera, acting within 8 days and exhibiting excellent safety, indiscernible from placebo. However, there were strong headwinds: In the 1990s the indication for cholera vaccines was generally downplayed by experts and in 1997 the European Commission called for a moratorium of GMOs which blocked the registration in the European Union. Thus, demand for this vaccine remained low and in 2003 it was taken off the market for economic reasons. After a decade in obscurity it (Vaxchora) has resurfaced again, now produced in the U.S. and equipped with a U.S. FDA license (June 10, 2016). What had happened? This commentary gives a critical account of an almost unbelievable string of misadventures, emerging adverse circumstances and man-made failures which nearly killed this single-dose live oral cholera vaccine. The good news is that patience and persistence lead to success in the end, allowing good science to prevail for the benefit of those in need.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin > Medical Services (Neumayr)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medicine (MED) > Medical Services (Neumayr)
UniBasel Contributors:Herzog, Christian
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:1477-8939
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:12 Dec 2016 14:34
Deposited On:12 Dec 2016 14:34

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