Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide


Crimean-Congo hemorrhagic fever



Crimean-Congo hemorrhagic fever


  • Last modified
  • 14 July 2018
  • Datasheet Type(s)
  • Animal Disease
  • Preferred Scientific Name
  • Crimean-Congo hemorrhagic fever
  • Overview
  • Crimean-Congo haemorrhagic fever (CCHF) is a severe haemorrhagic fever viral disease that affects humans.  It was initially described in 1944 in the Crimean peninsula of the USSR when several hundred Soviet troops dev...

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Preferred Scientific Name

  • Crimean-Congo hemorrhagic fever

Other Scientific Names

  • Crimean-Congo haemorrhagic fever

International Common Names

  • English: Congo virus disease; Crimean haemorrhagic fever; viral haemorrhagic fever; viral tick-borne haemorrhagic fever disease
  • French: fievre hemorragique Crimee-Congo

Local Common Names

  • Turkey: Kirim-Kongo Kanamali Atesi

English acronym

  • CCHF


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Crimean-Congo haemorrhagic fever (CCHF) is a severe haemorrhagic fever viral disease that affects humans.  It was initially described in 1944 in the Crimean peninsula of the USSR when several hundred Soviet troops developed an acute febrile illness accompanied by severe bleeding and shock (Chumakov, 1945). Further outbreaks occurred in the USSR, principally in many southern Soviet republics, with many thousands of clinical cases. In 1956, the virus (then called Congo virus) was isolated from a patient in the Belgian Congo (now Democratic Republic of the Congo) in Africa (Simpson et al., 1965) and has subsequently been found throughout most of the continent. Many outbreaks of disease were initially reported in Middle Eastern countries (Hoogstraal, 1979; Burney et al., 1980), but the disease is now known to occur across a huge geographic area from western China to the Middle East and southeastern Europe and throughout most of Africa (Whitehouse, 2004; Bente et al., 2013). Although this disease is not manifested in livestock, domesticated stock may act as important reservoirs of infection and source of virus for tick vectors.

Hosts/Species Affected

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CCHF disease occurs only in humans. A wide variety of mammals including domesticated and wild ruminants, insectivores, small lagomorphs, rodents and some carnivores have been shown to be infected with the virus and are important hosts for Hyalomma and other ixodid ticks that transmit CCHF ( Hoogstraal, 1979; Whitehouse, 2004; Nalca and Whitehouse, 2007). Larval and nymphal stages of Hyalomma and other ixodid (hard) ticks frequently take their blood meals from various ground-feeding bird species, which have been incriminated in Africa and Europe as amplifying hosts for CCHF (Hoogstraal, 1979; Camicas et al., 1994).


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CCHF was first recognized in 1944 in the Crimea in the southern Soviet Union and subsequently in Bulgaria. An identical viral agent was isolated in the Belgian Congo in 1956 and initially named ‘Congo virus.’ The disease is known throughout a large region of Africa, with the majority of cases being reported from Mauritania, South Africa, Uganda, and Sudan. However, significantly more cases have occurred throughout many countries in eastern and central Asia and the Middle East and Turkey (Bente et al., 2013). For instance, Turkey has experienced an unprecedented emergence in the disease over the past 15 years, with over 5000 human infections diagnosed since the first cases were identified in that country in 2002.

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Continent/Country/RegionDistributionLast ReportedOriginFirst ReportedInvasiveReferenceNotes


AfghanistanPresent1998Bente et al., 2013
ArmeniaNo information availableOIE, 2009
AzerbaijanDisease never reportedOIE, 2009
BahrainDisease never reportedOIE, 2009
BangladeshDisease never reportedOIE, 2009
BhutanDisease never reportedOIE, 2009
CambodiaNo information availableOIE, 2009
ChinaPresent1965Bente et al., 2013
-Hong KongNo information availableOIE, 2009
IndiaPresent2011Patel et al., 2011
IndonesiaNo information availableOIE, 2009
IranPresent2000Bente et al., 2013
IraqPresent1979Bente et al., 2013
IsraelDisease never reportedOIE, 2009
JapanNo information availableOIE, 2009
JordanNo information availableOIE, 2009
KazakhstanPresent1948WHO, 2001; Bente et al., 2013
Korea, Republic ofDisease never reportedOIE, 2009
KuwaitDisease never reportedOIE, 2009
KyrgyzstanPresentBente et al., 2013
LaosDisease never reportedOIE, 2009
LebanonDisease never reportedOIE, 2009
MalaysiaDisease never reportedOIE, 2009
MongoliaNo information availableOIE, 2009
MyanmarDisease never reportedOIE, 2009
NepalDisease never reportedOIE, 2009
OmanPresent1995WHO, 2001; Bente et al., 2013
PakistanPresent1976Burney et al., 1980; WHO, 2001; OIE, 2009; Bente et al., 2013
PhilippinesDisease never reportedOIE, 2009
QatarNo information availableOIE, 2009
Saudi ArabiaNo information availableOIE, 2009
SingaporeDisease never reportedOIE, 2009
Sri LankaDisease never reportedOIE, 2009
SyriaDisease never reportedOIE, 2009
TajikistanPresent1943Bente et al., 2013
ThailandNo information availableOIE, 2009
TurkeyPresent2002Bente et al., 2013
United Arab EmiratesPresent1979Bente et al., 2013
VietnamNo information availableOIE, 2009
YemenNo information availableOIE, 2009


AlgeriaNo information availableOIE, 2009
AngolaNo information availableOIE, 2009
BeninNo information availableOIE, 2009
BotswanaDisease never reportedOIE, 2009
Burkina FasoNo information availableOIE, 2009
ChadNo information availableOIE, 2009
CongoNo information availableNULLWHO, 2001; OIE, 2009
Congo Democratic RepublicPresent1956WHO, 2001; Bente et al., 2013
DjiboutiNo information availableOIE, 2009
EgyptNo information availableOIE, 2009
EritreaNo information availableOIE, 2009
EthiopiaNo information availableOIE, 2009
GabonNo information availableOIE, 2009
GambiaNo information availableOIE, 2009
GhanaNo information availableOIE, 2009
GuineaNo information availableOIE, 2009
Guinea-BissauNo information availableOIE, 2009
KenyaPresent2000Bente et al., 2013
LesothoDisease never reportedOIE, 2009
MadagascarDisease never reportedOIE, 2009
MalawiNo information availableOIE, 2009
MaliNo information availableOIE, 2009
MauritaniaPresent1983Bente et al., 2013
MauritiusDisease never reportedOIE, 2009
MoroccoNo information availableOIE, 2009
MozambiqueNo information availableOIE, 2009
NamibiaDisease not reportedOIE, 2009
NigeriaDisease never reportedOIE, 2009
RwandaDisease never reportedOIE, 2009
SenegalPresent2003Camicas et al., 1994; Bente et al., 2013
South AfricaPresent1981Swanepoel et al., 1983; Bente et al., 2013
SudanPresent2008Bente et al., 2013
SwazilandDisease never reportedOIE, 2009
TanzaniaNo information availableOIE, 2009
TogoNo information availableOIE, 2009
TunisiaDisease never reportedOIE, 2009
UgandaDisease never reportedOIE, 2009
ZambiaDisease never reportedOIE, 2009
ZimbabweDisease not reportedOIE, 2009

North America

CanadaDisease never reportedOIE, 2009
GreenlandDisease never reportedOIE, 2009
MexicoDisease not reportedOIE, 2009
USADisease never reportedOIE, 2009

Central America and Caribbean

BelizeDisease never reportedOIE, 2009
Costa RicaDisease never reportedOIE, 2009
CubaDisease never reportedOIE, 2009
Dominican RepublicDisease never reportedOIE, 2009
El SalvadorNo information availableOIE, 2009
GuadeloupeNo information availableOIE, 2009
GuatemalaDisease never reportedOIE, 2009
HaitiDisease never reportedOIE, 2009
HondurasDisease never reportedOIE, 2009
JamaicaNo information availableOIE, 2009
MartiniqueDisease never reportedOIE, 2009
NicaraguaDisease never reportedOIE, 2009
PanamaDisease never reportedOIE, 2009

South America

ArgentinaDisease never reportedOIE, 2009
BoliviaDisease never reportedOIE, 2009
BrazilDisease never reportedOIE, 2009
ChileDisease never reportedOIE, 2009
ColombiaDisease never reportedOIE, 2009
EcuadorDisease never reportedOIE, 2009
French GuianaNo information availableOIE, 2009
PeruDisease never reportedOIE, 2009
UruguayDisease never reportedOIE, 2009
VenezuelaDisease never reportedOIE, 2009


AlbaniaPresent2001Papa et al., 2002
AustriaNo information availableOIE, 2009
BelarusNo information availableOIE, 2009
BelgiumDisease not reportedOIE, 2009
BulgariaPresent1953Monev, 1994
CroatiaDisease never reportedOIE, 2009
CyprusDisease never reportedOIE, 2009
Czech RepublicDisease never reportedOIE, 2009
DenmarkDisease never reportedOIE, 2009
EstoniaNo information availableOIE, 2009
FinlandDisease never reportedOIE, 2009
Former USSRPresentChumakov, 1945; Chumakov, 1974
FranceDisease never reportedOIE, 2009
GermanyDisease never reportedOIE, 2009
GreecePresent2008Papa et al., 2010
HungaryDisease never reportedOIE, 2009
IcelandDisease never reportedOIE, 2009
IrelandDisease never reportedOIE, 2009
ItalyNo information availableOIE, 2009
LatviaDisease never reportedOIE, 2009
LiechtensteinDisease not reportedOIE, 2009
LithuaniaDisease not reportedOIE, 2009
LuxembourgDisease never reportedOIE, 2009
MacedoniaDisease never reportedOIE, 2009
MaltaDisease never reportedOIE, 2009
MontenegroDisease never reportedOIE, 2009
NetherlandsDisease never reportedOIE, 2009
NorwayDisease never reportedOIE, 2009
PolandNo information availableOIE, 2009
PortugalDisease never reportedOIE, 2009
RomaniaNo information availableOIE, 2009
Russian FederationPresentWHO, 2001; OIE, 2009; Bente et al., 2013
SerbiaPresent1995Bente et al., 2013
SlovakiaDisease never reportedOIE, 2009
SloveniaDisease never reportedOIE, 2009
SpainDisease never reportedOIE, 2009
SwedenDisease never reportedOIE, 2009
SwitzerlandDisease never reportedOIE, 2009
UKDisease never reportedOIE, 2009
UkraineDisease never reportedOIE, 2009
Yugoslavia (Serbia and Montenegro)PresentWHO, 2001


AustraliaDisease never reportedOIE, 2009
French PolynesiaDisease never reportedOIE, 2009
New CaledoniaDisease never reportedOIE, 2009
New ZealandDisease never reportedOIE, 2009

Disease Course

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Clinical disease occurs only in humans; for information on this see the Zoonoses and Food Safety section.


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CCHF is characteristically seen in the steppe and floodplain regions of Southern Europe and Asia, and in the drier bush savannah grasslands and semi-deserts of Africa. The foothills of the steppes in Asia and Europe with juniper and other tree cover are another biotope enzootic for CCHF. The most important tick genus involved in the transmission of CCHF is Hyalomma; these are the most common ticks affecting wild and domestic animals in the above biotopes (Hoogstraal, 1979; Bente et al., 2013). Thus, the geographic distribution of CCHF largely reflects that of Hyalomma ticks.

The virus is transmitted in tick populations from larvae to nymphs to adults (transstadial transmission), from adult females to their eggs (vertical transmission), or from male ticks to female ticks during copulation (venereal transmission) (Turell, 2007). The virus is thus well adapted to the tick host, which serves as its reservoir in nature, in addition to its vector. CCHFV has been detected in more than 30 species of ticks, including both hard and soft ticks (Turell, 2007). However, only a subset of these ticks has been definitely shown to be competent vectors of the virus experimentally in the laboratory. Those that have include several members of the genus Hyalomma, but also members of the genera Amblyomma, Rhipicephalus, and Dermacentor. The enzootic maintenance cycle of the virus involves ticks, birds, and other vertebrate hosts. For instance, larvae and nymphs of Hyalomma ticks, in particular, aggressively feed on a variety of hosts, including hedgehogs, hares, and ground-feeding birds, while the adults actively seek out sheep, cattle, and other large mammals. Most birds that are fed upon by CCHFV-infected ticks do not become viremic, but can play a role in the spread of these virus-infected ticks to new geographic areas (Leblebiciogul et al., 2014).

Predisposing factors for CCHF outbreaks include variations in tick populations, which can change from year to year depending on various factors including availability of vertebrate hosts, weather conditions, climate change, changes in vegetation or other factors that alters the success of molting and egg production of the ticks. Mild warm winter conditions, which favour the survival of large proportions of the larval ticks, have been associated with CCHF epizootics, whereas severe prolonged cold spells have a negative effect upon larval and nymphal tick populations (Estrada-Pena et al., 2012).

Human socio-economic changes are also important in disease transmission dynamics. Population movements may bring susceptible human populations into contact with the cryptic enzootic maintenance cycle for CCHF (Hoogstraal, 1979; Linthicum and Bailey, 1994). In particular, war results in displacement of population groups with their animals. There is a marked growth in vegetation following depopulation and this favours increases in small mammal populations and of the ticks, which find abundant hosts on which to feed. Under these conditions, tick populations can increase 10,000-1,000,000-fold. A return of humans to such areas is inevitably followed by greater contact with infected tick populations and higher risk of CCHF. This occurred during the original CCHF outbreak in Crimea in 1944 when soldiers sent to reclaim abandoned farms were exposed to large numbers of ticks infesting a markedly expanded wild hare population and is thought to play a role in the more recent emergence of CCHF in Central Turkey when residents returned to farms abandoned during civil conflict (Bente et al., 2013).

Impact: Economic

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The disease only occurs in humans, thus there are no significant economic losses to agriculture.

Zoonoses and Food Safety

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Those people living in enzootic areas who are associated with livestock are at greatest risk of infection. Herders, milkers, shearing staff, slaughtering staff, farm labourers and forestry workers are all at increased risk of contracting CCHF. In addition, medical personnel having direct contact with CCHF patients are at particularly high risk of infection (Whitehouse, 2004). While many human infections result from tick bites, others result from direct exposure to tissues, blood, and other bodily fluids from infected animals. Principally among those at increased risk include abattoir workers and others involved in the skinning and slaughter of animals.

A real danger exists to all personnel dealing with CCHF patients both in the home and at hospitals and clinics; nosocomial spread of CCHF is a well-documented phenomenon (Whitehouse, 2004). Person-to-person transmission can occur through contact with the virus-containing body fluids of a patient during the first 7-10 days of illness. However, standard barrier nursing methods are sufficient to prevent the transmission of CCHF in the patient care setting.

In humans, clinical disease occurs following an incubation period that ranges from 1-5 days following tick bite to 5-7 days following contact with infected blood or tissues (Ergonul, 2006). Disease symptoms can vary greatly. Some patients experience only a mild, nonspecific febrile illness, while others develop severe haemorrhagic disease. Patients can experience a sudden onset of fever, headache, muscle pains, vomiting, swelling of the face, a haemorrhagic rash, and bleeding from the nasopharynx, gastrointestinal tract and other sites. In some cases, cerebral haemorrhage, as well as bleeding from the vagina, may occur (Ergonul, 2006). In fatal cases, death occurs from 5-14 days after infection and results from haemorrhage, multi-organ failure, and shock. Case fatality rate can be as high as 30%.

CCHF should be suspected when a person with an appropriate exposure history (tick bite or contact with animal tissue/fluids) becomes acutely ill with malaise, fever, and other flu-like symptoms. CCHF patients are usually viremic during the first 7-10 days of illness. Thus, a specific diagnosis can be made by testing a serum specimen for viral RNA by RT-PCR. Testing for virus-specific IgM and/or IgG by ELISA or other methods can also be performed. Virus-specific IgM becomes detectable by the end of the first week, with IgG appearing shortly thereafter (Bente et al., 2013). The isolation of virus in culture has been long considered the “gold standard’ for diagnosis, but for CCHFV, it requires Biosafety Level-4 biocontainment, which is not available in most of the CCHF-endemic countries. In view of its speed, sensitivity, and safety, RT-PCR should be considered the standard diagnostic method for CCHF (Bente et al., 2013).

Current medical management of CCHF is largely supportive including volume replacement with intravenous fluids, careful monitoring to prevent the development of pulmonary edema, and treatment of coagulation abnormalities by giving the patient fresh frozen plasma and/or platelets. In severe cases of haemorrhagic disease with significant blood loss, a blood transfusion may be required. The antiviral drug, ribavirin, has been used for the treatment of CCHF since the mid-1980s.  It is generally thought that ribavirin therapy is beneficial as long as it is initiated early in the course of illness. However, in a randomized clinical trial, ribavirin treatment was unable to significantly alter the course of the disease (Koksal et al., 2010). Type I interferon inhibits CCHFV replication in culture, but showed no benefit when given to 6 patients during an outbreak in South Africa (van Eeden et al., 1985).

Prevention and Control

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The control of tick populations is not normally thought to be a cost-effective strategy of disease control. In general, it is believed that control of CCHF through the application of chemical acaricides to livestock is impractical; however, aerial spraying and dipping of livestock has been practised in outbreak situations. Other methods of tick control include the use of biological control, which typically involves the deliberate introduction of predators, parasites, or pathogens to control populations of a vector species. An innovative method to attempt to control ticks has been the use of tick pheromones in conjunction with acaricides. Many of these strategies incorporate a pheromone-acaricide-impregnated device (a so-called “tick decoy”), which is used to lure and kill host-seeking ticks (Sonenshine, 2006). Although many of these biocontrol methods hold promise, further research is needed to determine whether they can be effective under field conditions.

The most effective means of preventing infection is to educate those populations of individuals at the highest risk for contracting the disease regarding ways to avoid contact with the virus. Important risk groups include healthcare workers and persons working outdoors in endemic areas, particularly those with direct contact with large domestic animals. Those individuals who work outdoors should take appropriate precautions to avoid exposure to ticks. Others including farmers, veterinarians, and workers at abattoirs and slaughterhouses should take measures to reduce their exposure to animal blood and other body fluids.

A suckling mouse brain-derived, formalin-inactivated vaccine was used in parts of Eastern Europe and the former Soviet Union in the 1970s with apparent success. However, the vaccine is not widely available, and given the relatively small target population of persons at risk for contracting the disease, the large-scale development and production of a CCHF vaccine by modern standards seems unlikely (Whitehouse, 2007).


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Bente DA, Forrester NL, Watts DM, McAuley AJ, Whitehouse CA, Bray M, 2013. Crimean-Congo hemorrhagic fever: history, epidemiology, pathogenesis, clinical syndrome and genetic diversity. Antiviral Research, 100(1):159-189.

Burney ML, Ghafoor A, Saleen M, Webb PA, Casals J, 1980. Nosocomial outbreak of viral haemorrhagic fever caused by Crimean Congo haemorrhagic fever virus in Pakistan, January 1976. American Journal of Tropical Medicine and Hygiene, 29:941-947.

Camicas JL, Cornet JP, Gonzalez JP, Wilson ML, Adam F, Zeller HG, 1994. Crimean-Congo haemorrhagic fever in Senegal. Latest results on the ecology of CCHF virus. Bulletin de la Société de Pathologie Exotique, 87(1):11-16; 22 ref.

Chumakov MP, 1945. A New Viral Tick Borne haemorrhagic fever disease in the Crimea. In: Krymskaya gemoragicheskaya likhoradka Simpheropol, 13-43. [in Russian].

Chumakov MP, 1974. Contribution to 30 years of investigation of Crimean haemorrhagic fever. In: Chumakov MP, ed. Medical Virology, Vol. 22. Trudy Inst. Polio Virus Research. Entsef. Akad. Med. Nauk. SSSR, 5-18. [English translation NAMRU 3-T950].

Eeden PJ van, Eeden SF van, Joubert JR, King JB, Wal BW van de, Michell WL, 1985. A nosocomial outbreak of Crimean-Congo haemorrhagic fever at Tygerberg Hospital. Part II. Management of patients. South African Medical Journal, 68:718-721.

Ergönül Ö, 2006. Crimean-Congo haemorrhagic fever. Lancet Infectious Diseases, 6(4):203-214.

Estrada-Peña A, Ayllón N, Fuente Jde la, 2012. Impact of climate trends on tick-borne pathogen transmission. Frontiers in Physiology, 3:64.

Flick R, 2007. Molecular biology of the Crimean-Congo hemorrhagic fever virus. In: Crimean-Congo hemorrhagic fever: a global perspective [ed. by Ergonul, O.\Whitehouse, C. A.]. Heidelberg, Germany: Springer Berlin, 35-44.

Hoogstraal H, 1979. The epidemiology of tick borne Crimean Congo Haemorrhagic fever in Asia, Europe and Africa. Journal of Medical Entomology, 15:307-417.

Koksal I, Yilmaz G, Aksoy F, Aydin H, Yavuz I, Iskender S, Akcay K, Erensoy S, Caylan R, Aydin K, 2010. The efficacy of ribavirin in the treatment of Crimean-Congo hemorrhagic fever in Eastern Black Sea region in Turkey. Journal of Clinical Virology, 47(1):65-68.

Leblebicioglu H, Eroglu C, Erciyas-Yavuz K, Hokelek M, Acici M, Yilmaz H, 2014. Role of migratory birds in spreading Crimean-Congo hemorrhagic fever, Turkey. Emerging Infectious Diseases, 20(8):1331-1334.

Linthicum KJ, Bailey CL, 1994. Ecology of Crimean-Congo haemorrhagic fever. In: Sonenshine DE, Mather TN, ed. Ecological Dynamics of Tick Borne zoonoses. New York, USA: Oxford University Press, 392-437.

Monev V, 1994. Epidemiological and cartographic assessment of the risks of infection with Crimean-Congo haemorrhagic fever in Bulgaria. Infectology, 31(3):11-15.

Nalca A, Whitehouse C, 2007. Crimean-Congo hemorrhagic fever virus infection among animals. In: Crimean-Congo hemorrhagic fever: a global perspective [ed. by Ergonul, O.\Whitehouse, C. A.]. Heidelberg, Germany: Springer Berlin, 155-165.

OIE, 2009. World Animal Health Information Database - Version: 1.4. World Animal Health Information Database. Paris, France: World Organisation for Animal Health.

Papa A, Bino S, Llagami A, Brahimaj B, Papadimitriou E, Pavlidou V, Velo E, Cahani G, Hajdini M, Pilaca A, Harxhi A, Antoniadis A, 2002. Crimean-Congo hemorrhagic fever in Albania, 2001. European Journal of Clinical Microbiology & Infectious Diseases, 21(8):603-606.

Papa A, Dalla V, Papadimitriou E, Kartalis GN, Antoniadis A, 2010. Emergence of Crimean-Congo haemorrhagic fever in Greece. Clinical Microbiology and Infection, 16(7):843-847.

Patel AK, Patel KK, Minesh Mehta, Parikh TM, Harsh Toshniwal, Kamlesh Patel, 2011. First Crimean-Congo hemorrhagic fever outbreak in India. Journal of the Association of Physicians of India, 59(September):585-589.

Simpson DIH, Williams MC, Woodall JP, 1965. Four cases of human infection with the Congo agent. Report East African Virus Research Institute, (1963-64), 14:27-28.

Sonenshine DE, 2006. Tick pheromones and their use in tick control. Annual Review of Entomology, 51:557-580.

Swanepoel R, Struthers JK, Shepherd AJ, McGillivray GM, Nel MJ, Jupp PG, 1983. Crimean-Congo hemorrhagic fever in South Africa. American Journal of Tropical Medicine and Hygiene, 32(6):1407-1415; [1 fig.]; 24 ref.

Turell M, 2007. Role of ticks in the transmission of Crimean-Congo hemorrhagic fever virus. In: Crimean-Congo hemorrhagic fever: a global perspective [ed. by Ergonul, O.\Whitehouse, C. A.]. Heidelberg, Germany: Springer Berlin, 143-154.

Watt DM, Ksiazek TG, Linthicum KJ, Hoogstraal H, 1988. Crimean-Congo haemorrhagic fever. In: Monath TP, ed. The Arboviruses: epidemiology and ecology, Vol. 2. Boca Raton, Florida, USA: CRC Press, 177-260.

Whitehouse C, 2007. Risk groups and control measures for Crimean-Congo hemorrhagic fever. In: Crimean-Congo hemorrhagic fever: a global perspective [ed. by Ergonul, O.\Whitehouse, C. A.]. Heidelberg, Germany: Springer Berlin, 273-280.

Whitehouse CA, 2004. Crimean-Congo hemorrhagic fever. Antiviral Research, 64(3):145-160.

WHO, 2001. Crimean-Congo haemorrhagic fever.

Links to Websites

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CDC – Crimean-Congo hemorrhagic fever
WHO - Crimean-Congo haemorrhagic fever


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26/02/15 Updated by:

Chris A. Whitehouse, U.S. Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, Maryland 21702, USA.

Distribution Maps

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