1967 Marburg virus outbreak in West Germany

Disease| Marburg virus disease
Virus strain| Marburg virus
Location| West Germany and Yugoslavia
First outbreak| Marburg and Frankfurt
Confirmed cases| 32

Deaths

| 7

Territories

| 2

The 1967 Marburg virus outbreak in West Germany was the first outbreak of Marburg virus disease.[1] It started in early August 1967 when 30 people became ill in the German towns of Marburg and Frankfurt and later two in Belgrade, Yugoslavia (now Serbia).[2] The infections were traced back to three laboratories in the separate locations which received a shared shipment of infected African green monkeys.[3] The outbreak involved 25 primary Marburg virus infections and seven deaths, and six non-lethal secondary cases.[2]

## Contents

* 1 Overview
* 2 Origin
* 3 History
* 4 See also
* 5 References
* 6 Further reading

## Overview

In early August 1967, patients with unusual symptoms indicating an infectious disease were admitted to the university hospitals in Marburg and Frankfurt. The first patients were treated in their homes for up to 10 days, even though the illness was described as beginning suddenly with extreme malaise, myalgia, headache, and a rapid increase in body temperature to as high as 39 °C (102.2 °F) or more. Although the clinical symptoms were not very alarming during the first 3–4 days, additional symptoms and signs appeared at the end of the first week. The patients were therefore admitted to a hospital. In some cases, patients died from severe hemorrhagic shock on the day after hospital admission. Severe hemorrhagic shock occurred in about 25% of patients. All patients who died had hemorrhagic shock. The first infections occurred in laboratory workers who were conducting necropsies on imported African green monkeys.[4]

The incubation time of Marburg virus disease could only be estimated retrospectively, after the source of infection and the date of exposure were known. Incubation ranged from 5 to 9 days, with an average of 8 days. The ratio of primary to secondary infections was 21:3 in Marburg, 4:2 in Frankfurt, and 1:1 in Belgrade. Three cases of secondary infection resulted from inadvertent needle-stick inoculations; in one case, a pathology technician cut himself on the forearm with a knife during a postmortem examination. Airborne transmission between humans did not occur, as indicated, for example, by the instance of a young man who slept in the same bed with his brother only a couple of days before he died; the brother did not develop disease and was seronegative for Marburg virus disease six months later.[3]

## Origin

Shipment of infected African green monkeys to three laboratories was the origin of the outbreaks.

The origin of the outbreaks was investigated at the same time as the microbiological studies. Early on in the investigation, it was realized that the patients in Marburg were employees of Behringwerke, a producer of sera and vaccines. The patients in Frankfurt were employees of Paul Ehrlich Institute, a control institute of sera and vaccines. While the primary case in Belgrade was an employee involved in testing of live vaccines. All the patients at the three locations had contact with blood, organs, and cell cultures from African green monkeys (Cercopithecus aethiops). The monkeys' organs were used to make kidney cell culture for the production and safety testing of vaccines.[3]

The separate outbreaks were traced break to a shared shipment of infected green monkeys. Generally, shipments of green monkeys went directly from Uganda to Frankfurt. However, because of the Six Day War (5–10 June 1967), this shipment of monkeys was rerouted through London, where they were placed in animal storage because of a strike at the airport. After a two day delay, the monkeys were shipped to Frankfurt, and then to the laboratories in Frankfurt, Marburg, and Belgrade in June and July. The subsequent processing of the monkeys for cell culture at the three locations led to the laboratory-related outbreaks. The monkeys were believed to have been infected in Uganda, although infection from other animals in storage in London was also possible.[3]

## History

The Marburg virus disease made reappearances in other countries in 1975, 1980, 1987, 1990, 1998–2000, 2004–05, 2007, 2008, 2017 and 2021. The seven deaths out of the 31 initially diagnosed infections during the 1967 Marburg virus outbreak represent a case fatality rate of 23%. The 32nd case was diagnosed retroactively via serology.[5]

## See also

* List of epidemics
* List of Filoviridae outbreaks

## References

1. ↑ "Marburg Hemorrhagic Fever (Marburg HF) | CDC" (in en-us). 25 February 2019. https://www.cdc.gov/vhf/marburg/index.html.
2. ↑ 2.0 2.1 "Marburg Virus - an overview | ScienceDirect Topics". https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/marburg-virus.
3. ↑ 3.0 3.1 3.2 3.3 Slenczka, Werner; Klenk, Hans Dieter (2007-11-15). "Forty Years of Marburg Virus" (in en). The Journal of Infectious Diseases 196 (Supplement_2): S131–S135. doi:10.1086/520551. ISSN 0022-1899. PMID 17940940. https://academic.oup.com/jid/article/196/Supplement_2/S131/858753.
4. ↑ Brauburger, Kristina; Hume, Adam J.; Mühlberger, Elke; Olejnik, Judith (2012-10-01). "Forty-Five Years of Marburg Virus Research". Viruses 4 (10): 1878–1927. doi:10.3390/v4101878. ISSN 1999-4915. PMID 23202446.
5. ↑ "Outbreaks Chronology: Marburg Hemorrhagic Fever | Marburg Hemorrhagic Fever (Marburg HF) | CDC" (in en-us). 2019-02-25. https://www.cdc.gov/vhf/marburg/outbreaks/chronology.html.

## Further reading

* Bebell, Lisa M.; Riley, Laura E. (June 2015). "Ebola Virus Disease and Marburg Disease in Pregnancy". Obstetrics & Gynecology 125 (6): 1293–1298. doi:10.1097/AOG.0000000000000853. ISSN 1873-233X. PMID 26000499.
* Murphy, R. Henry and F. A. (2017). "Etymologia: Marburg Virus - Volume 23, Number 10 – October 2017 - Emerging Infectious Disease journal – CDC". Emerging Infectious Diseases 23 (10): 1689. doi:10.3201/eid2310.ET2310.
* "Ebola Virus Disease & Marburg Virus Disease - Chapter 3 - 2018 Yellow Book | Travelers' Health | CDC". Centers for Disease Control. https://wwwnc.cdc.gov/travel/yellowbook/2018/infectious-diseases-related-to-travel/ebola-virus-disease-and-marburg-virus-disease.
* Martini, G. A.; Siegert, R. (2013) (in en). Marburg Virus Disease. Berlin, Heidelberg: Springer Science & Business Media. ISBN 9783662015933. https://books.google.com/books?id=qzzzCAAAQBAJ&q=marburg+virus&pg=PP6. Retrieved 8 November 2017.
* "Marburg virus disease: origins, reservoirs, transmission and guidelines – GOV.UK". Government of the United Kingdom. https://www.gov.uk/guidance/marburg-virus-disease-origins-reservoirs-transmission-and-guidelines.

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