Epidemic typhus fever is a bacterial disease entity indexed here under ICD-10 A75.0 and ICD-11 1C30 [disease metadata]. The cited literature identifies the agent as Rickettsia prowazeki and contrasts it with murine typhus caused by Rickettsia typhi [1]. The sources also describe epidemic typhus as clinically similar to murine typhus in pathologic and serologic reactions [1].
Disease overview
BacterialEpidemic typhus fever
流行性斑疹伤寒
Evidence-backed informationEN 7/7 applicable sections · ZH 7/7 applicable sectionsUpdated Sep 4, 2026
Epidemic typhus fever is a bacterial typhus syndrome identified in the surveillance record as a globally occurring epidemic disorder, with historical literature linking it to recurrent and outbreak-associated illness [1]. The available sources emphasize its close relationship to murine typhus in clinical, pathologic, and serologic terms, while noting that the human ecology of epidemic typhus has been debated and may not be limited to a simple human-louse-human cycle [1]. Source-backed detail on current case burden, routine severity patterns, and modern public-health distribution is not yet available from the provided material [1].
Read the full clinical and epidemiological profile8
The provided sources characterize epidemic typhus largely by its similarity to murine typhus rather than by a detailed symptom profile [1]. They state that the two diseases are clinically similar in pathologic and serologic reactions, implying overlapping clinical and laboratory recognition patterns [1].
The sources state that typhus fever has occurred globally as both epidemic and endemic disorders [1]. For epidemic typhus, the older concept was a human cycle without an animal reservoir, but this view is described as questioned in the cited review [1]. The review reports antibody findings and organism recovery in livestock, rats, flying squirrels, and associated ectoparasites, and it notes more than 20 cases of squirrel-related acute epidemic typhus in the United States [1]. Beyond these historical and ecological observations, source-backed detail on contemporary incidence, regional hot spots, or surveillance burden is not yet available [1].
The available material indicates that the classic model for epidemic typhus involved a man-louse-man cycle [1]. The same review notes that this concept is now questioned, and it reports detection of R. prowazeki in several animal and ectoparasite contexts, suggesting a more complex exposure ecology than the traditional model alone [1]. Specific transmission probabilities, persistence in vectors, or exposure timing are not provided in the supplied sources [1].
It does report exposure-linked contexts involving livestock, rats, flying squirrels, and their ectoparasites, as well as more than 20 squirrel-related acute cases in the United States [1].
No direct prevention guidance is given in the supplied snippets [1][2][3][4][5]. The evidence does support that epidemic typhus surveillance should consider ectoparasite-associated exposure contexts and animal-linked findings described in the review, including lice, fleas, and other ectoparasites recovered with R. prowazeki [1]. Source-backed detail on vaccination, chemoprophylaxis, isolation, delousing protocols, or other control measures is not yet available from the provided material [1].
In surveillance terms, epidemic typhus should be read as a historically important, globally occurring typhus syndrome with an evolving ecological interpretation rather than as a fully static human-only louse-borne entity [1]. The record highlights serologic and pathologic overlap with murine typhus, which may complicate interpretation when only limited laboratory or syndrome data are available [1]. Because the supplied sources are sparse on contemporary epidemiologic parameters, current monitoring should be cautious and should not infer details beyond the documented global occurrence, animal/ectoparasite associations, and historical recurrence [1].
- 1Woodward TE et al. Murine and epidemic typhus rickettsiae: how close is their relationship? Yale J Biol Med. 1982 May-Aug. PMID: 6817526.PubMed: https://pubmed.ncbi.nlm.nih.gov/6817526/
- 2Jezdinský J et al. Emil Starkenstein--one of the most important personalities of European continental pharmacology in the period between the two world wars. Neuro Endocrinol Lett. 2006 Oct. PMID: 16892006.PubMed: https://pubmed.ncbi.nlm.nih.gov/16892006/
- 3SEROLOGIC DIAGNOSIS OF EPIDEMIC TYPHUS FEVER. American Journal of Epidemiology. 1977. doi: 10.1093/oxfordjournals.aje.a112382.DOI: https://doi.org/10.1093/oxfordjournals.aje.a112382
- 4Epidemic Typhus Fever. Beyond Anthrax. 2008. doi: 10.1007/978-1-59745-326-4_8.DOI: https://doi.org/10.1007/978-1-59745-326-4_8
- 5SMALLPOX, TYPHUS AND RELAPSING FEVERS EPIDEMIC IN ETHIOPIA. School Science and Mathematics. 1936. doi: 10.1111/j.1949-8594.1936.tb11005.x.DOI: https://doi.org/10.1111/j.1949-8594.1936.tb11005.x
- 6US Centers for Disease Control and Prevention. About Epidemic Typhus | Typhus Fevers | CDC [Internet]. cited 4 Sept 2026.Available from: https://www.cdc.gov/typhus/about/epidemic.html
- 7Bechah Y et al. Epidemic typhus. Lancet Infect Dis. 2008 Jul. PMID: 18582834. doi: 10.1016/S1473-3099(08)70150-6.PubMed: https://pubmed.ncbi.nlm.nih.gov/18582834/
- A75.0
- 1C30
Coverage
Reporting countries and regions
Trends by reporting country
Monthly patterns over time
Data access
Page dataset index with source links and update metadata.