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Monkeypox virus

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Orthopoxvirus monkeypox
Colorized transmission electron micrograph of monkeypox virus particles (teal) found within an infected cell (brown), cultured in the laboratory.
Virus classification Edit this classification
(unranked): Virus
Realm: Varidnaviria
Kingdom: Bamfordvirae
Phylum: Nucleocytoviricota
Class: Pokkesviricetes
Order: Chitovirales
Family: Poxviridae
Genus: Orthopoxvirus
Species:
Orthopoxvirus monkeypox
Clades
  • Clade I
    • Clade Ia
    • Clade Ib
  • Clade II
    • Clade IIa
    • Clade IIb
Synonyms

MPV, MPXV, hMPXV

The monkeypox virus (MPV, MPXV, or hMPXV)[1][a] is a species of double-stranded DNA virus that causes mpox disease in humans and other mammals. It is a zoonotic virus belonging to the Orthopoxvirus genus, making it closely related to the variola, cowpox, and vaccinia viruses. MPV is oval, with a lipoprotein outer membrane. The genome is approximately 190 kb. Smallpox and monkeypox viruses are both orthopoxviruses, and the smallpox vaccine is effective against mpox if given within 3–5 years before the disease is contracted.[4] Symptoms of mpox in humans include a rash that forms blisters and then crusts over, fever, and swollen lymph nodes.[5] The virus is transmissible between animals and humans by direct contact to the lesions or bodily fluids.[6] The virus was given the name monkeypox virus after being isolated from monkeys, but most of the carriers of this virus are smaller mammals.[5]

The virus is endemic in Central Africa, where infections in humans are relatively frequent.[5][7] Though there are many natural hosts for the monkeypox virus, the exact reservoirs and how the virus is circulated in nature needs to be studied further.[8]

Virology

Classification

The monkeypox virus is a zoonotic virus belonging to the genus Orthopoxvirus, which itself is a member of the family Poxviridae (also known as the poxvirus family).[9] Of note, the Orthopoxvirus genus includes the variola virus that prior to eradication via the advent of the smallpox vaccine, was the cause of the infectious human disease known as smallpox.[10] Members of the poxvirus family, include the monkeypox virus itself have been listed by the WHO as diseases with epidemic or pandemic potential.[11] The monkeypox virus is listed as being a potentially high or severe threat pathogen in both the European Union (EU) and the United States of America.[11][12][13]

There are two subtypes or clades, clade I historically associated with the Congo Basin and clade II historically associated with West Africa. A global outbreak during 2022–2023 was caused by clade II.[5]

MPV is 96.3% identical to the variola virus in regards to its coding region, but it does differ in parts of the genome which encode for virulence and host range.[14] Through phylogenetic analysis, it was found that MPV is not a direct descendant of the variola virus.[14]

Structure and genome

Colorized transmission electron micrograph of monkeypox virus particles (green)

The monkeypox virus, like other poxviruses, is oval, with a lipoprotein outer membrane. The outer membrane protects the enzymes, DNA, and transcription factors of the virus.[15] Typical DNA viruses replicate and express their genome in the nucleus of eukaryotic cells, relying heavily on the host cell's machinery. However, monkeypox viruses rely mostly on proteins encoded in their genome that allow them to replicate in the cytoplasm.[16]

The genome of the monkeypox virus comprises 200 kb of double-stranded DNA coding for 191 proteins.[17][18] Similar to other poxviruses, the virions of monkey pox have large oval envelopes. Within each virion, there is a core which holds the genome, along with the enzymes that assist in dissolving the protein coat and replication.[19] The center of the genome codes for genes involved in key functions such as viral transcription and assembly; genes located on the extremities of the viral genome are associated more with interactions between the virus and the host cell, such as spike protein characteristics.[16]

Monkeypox virus is relatively large, compared to other viruses. This makes it harder for the virus to breach the host defences, such as crossing gap junctions. Furthermore, the large size makes it harder for the virus to replicate quickly and evade immune response.[16] To evade host immune systems, and buy more time for replication, monkeypox and other orthopox viruses have evolved mechanisms to evade host immune cells.[20]

Monkeypox virus size and structure in comparison to HIV, SARS-COV-2 and Poliovirus. Membranes and membrane-bound proteins are in purple, capsids are in dark blue, and genomes and nucleoid-associated proteins are in turquoise.

Replication and life cycle

As an Orthopoxvirus, MPV replication occurs entirely in the cell cytoplasm within 'factories' – created from the host rough endoplasmic reticulum (ER) – where viral mRNA transcription and translation also take place.[21][22] The factories are also where DNA replication, gene expression, and assembly of mature virions (MV) are located.[23]

MPV virions (MVs) are able to bind to the cell surface with the help of viral proteins.[24] Virus entry into the host cell plasma membrane is dependent on a neutral pH, otherwise entry occurs via a low-pH dependent endocytic route.[24] The MV of the monkeypox virus has an Entry Fusion Complex (EFC), allowing it to enter the host cell after attachment.[24]

The viral mRNA is translated into structural virion protein by the host ribosomes.[21] Gene expression begins when MPV releases viral proteins and enzymatic factors that disable the cell.[25] Mature virions are infectious. However, they will stay inside the cell until they are transported from the factories to the Golgi/endosomal compartment.[23] Protein synthesis allows for the ER membrane of the factory to dismantle, while small lipid-bilayer membranes will appear to encapsulate the genomes of new virions, now extracellular viruses (EVs).[25][21][23] The VPS52 and VPS54 genes of the GARP complex, which is important for transport, are necessary for wrapping the virus, and formation of EVs.[23] DNA concatemers process the genomes, which appear in new virions, along with other enzymes, and genetic information needed for the replication cycle to occur.[25] EVs are necessary for the spread of the virus from cell-to-cell and its long-distance spread.[23]

Transmission

Animal to human

Zoonotic transmission can occur from direct contact with the blood, bodily fluids, wounds, or mucosal lesions of infected animals whether they are dead or alive. The virus is thought to have originated in Africa where the virus has been observed in multiple animals, including rope squirrels, tree squirrels, Gambian pouched rats, dormice, and different species of monkeys. Though the natural reservoir of the monkeypox virus has not yet been established, rodents are speculated to be the most likely reservoir. Eating meat that has not been properly cooked and consuming other products of infected animals proves to be a major risk factor in the spread of infection.[26]

Human to human

Transmission scheme of the monkeypox virus[27]

Monkeypox virus can be transmitted from one person to another through contact with infectious lesion material or fluid on the skin, in the mouth or on the genitals; this includes touching, close contact and during sex. It may also spread by means of respiratory droplets from talking, coughing or sneezing.[5][28] During the 2022-2023 outbreak, transmission between people was almost exclusively via sexual contact.[29] There is a lower risk of infection from fomites (objects which can become infectious after being touched by an infected person) such as clothing or bedding, but precautions should be taken.[5]

The virus then enters the body through broken skin, or mucosal surfaces such as the mouth, respiratory tract, or genitals.[30][31]

Human to animal

There are two recorded instances of human to animal transmission. Both occurred during the 2022–2023 global mpox outbreak. In both cases, the owners of a pet dog first became infected with mpox and transmitted the infection to the pet.[32][31]

Mpox disease

Human

Initial symptoms of mpox infection are fever, muscle pains, and sore throat, followed by an itchy or painful rash, headache, swollen lymph nodes, and fatigue. Not everyone will exhibit the complete range of symptoms.[33][34]

People with mpox usually become symptomatic about a week after infection. However the incubation period can vary in a range between one day and four weeks.[35][36]

Animal

It is thought that small mammals provide a reservoir for the virus in endemic areas.[37] Spread among animals occurs via the fecal–oral route and through the nose, through wounds and eating infected meat.[38] The disease has also been reported in a wide range of other animals, including monkeys, anteaters, hedgehogs, prairie dogs, squirrels, and shrews. Signs and symptoms in animals are not well researched and further studies are in progress.[37]

Prevention

Vaccine

Historically, smallpox vaccine had been reported to reduce the risk of mpox among previously vaccinated persons in Africa. The decrease in immunity to poxviruses in exposed populations is a factor in the increasing prevalence of human mpox. It is attributed to waning cross-protective immunity among those vaccinated before 1980, when mass smallpox vaccinations were discontinued, and to the gradually increasing proportion of unvaccinated individuals.[39]

As of August 2024, there are four vaccines in use to prevent mpox. All were originally developed to combat smallpox.[40]

  • MVA-BN (marketed as Jynneos, Imvamune or Imvanex) manufactured by Bavarian Nordic. Licensed for use against mpox in Europe, United States and Canada.[41]
  • LC16 from KMB Biologics (Japan) – licensed for use in Japan.[42]
  • OrthopoxVac, licensed for use in Russia and manufactured by the State Research Center of Virology and Biotechnology VECTOR in Russia[43]
  • ACAM2000, manufactured by Emergent BioSolutions. Approved for use against mpox in the United States as of August 2024.[44][45]

The MVA-BN vaccine, originally developed for smallpox, has been approved in the United States for use by persons who are either considered at high risk of exposure to mpox, or who may have recently been exposed to it.[46][47][48][49] The United States Centers for Disease Control and Prevention (CDC) recommends that persons investigating mpox outbreaks, those caring for infected individuals or animals, and those exposed by close or intimate contact with infected individuals or animals should receive a vaccination.[50]

Other measures

The CDC has made detailed recommendations in addition to the standard precautions for infection control. These include that healthcare providers don a gown, mask, goggles, and a disposable filtering respirator (such as an N95), and that an infected person should be isolated a private room to keep others from possible contact.[51]

Those living in countries where mpox is endemic should avoid contact with sick mammals such as rodents, marsupials, non-human primates (dead or alive) that could harbour Orthopoxvirus monkeypox and should refrain from eating or handling wild game (bush meat).[52][53]

During the 2022–2023 outbreak, several public health authorities launched public awareness campaigns in order to reduce spread of the disease.[54][55][56]

Treatment

Most cases of mpox present with mild symptoms and there is complete recovery within 2 to 4 weeks.[57][53] There is no specific treatment for the disease, although antivirals such as tecovirimat have been approved for the treatment of severe mpox.[58][59][60] A 2023 Cochrane review found no completed randomized controlled trials studying therapeutics for the treatment of mpox.[61] The review identified non-randomized controlled trials which evaluated the safety of therapeutics for mpox, finding no significant risks from tecovirimat and low certainty evidence that suggests brincidofovir may cause mild liver injury.[61] Pain is common and may be severe; supportive care such as pain or fever control may be administered.[53][62] People with mild disease should isolate at home, stay hydrated, eat well, and take steps to maintain their mental health.[33]

Immune system interaction

Pox viruses have mechanisms to evade the hosts' innate and adaptive immune systems. Viral proteins, expressed by infected cells, employ multiple approaches to limit immune system activity, including binding to, and preventing activation of proteins within the host's immune system, and preventing infected cells from dying to enable them to continue replicating the monkey pox virus.[63]

Variants and clades

The virus is subclassified into two clades, clade I and clade II.[5] At the protein level, the clades share 170 orthologs, and their transcriptional regulatory sequences show no significant differences.[11] Both clades have 53 common virulence genes, which contain different types of amino acid changes. 121 of the amino acid changes in the virulence genes are silent, while 61 are conservative, and 93 are non-conservative.[11]

Historically, the case fatality rate (CFR) of past outbreaks was estimated at between 1% and 10%, with clade I considered to be more severe than clade II.[64] The CFR of the 2022-2023 global outbreak (caused by clade IIb) has been very low - estimated at 0.16%, with the majority of deaths in individuals who were already immunocompromised.[65]

Clades and subclades of Orthopoxvirus monkeypox
Name[66] Former names[66] Nations[67][68]
Clade I Clade Ia Congo Basin

Central African

Clade Ib
Clade II Clade IIa West African
Clade IIb Widespread globally - See 2022–2023 mpox outbreak § Cases per country and territory

History

A map of the spread of the monkeypox virus globally.
  Endemic clade II
  Endemic clade I
  Both clades recorded
  Clade IIb outbreak in 2022–2023

Monkeypox virus was first identified by Preben von Magnus in Copenhagen, Denmark, in 1958 in crab-eating macaque monkeys (Macaca fascicularis) being used as laboratory animals.[69] The virus was originally given the name monkeypox virus because it had been isolated from monkeys; subsequent research reveals that monkeys are not the main host. Other small mammals in the tropical forests of Central and West Africa[70] are suspected to form a natural reservoir.[11]

The first human infection was diagnosed 1970, in the Democratic Republic of Congo.[5] Small viral outbreaks with secondary human-to-human infection occur routinely in endemic areas of Central Africa; the primary route of infection is thought to be contact with the infected animals or their bodily fluids.[71] The first reported outbreak in humans outside of Africa occurred in 2003 in the United States; it was traced to Gambian pouched rats which had been imported as exotic pets.[72] There have subsequently been a number of outbreaks to regions outside of the endemic areas in Central Africa, and 2 public health emergencies of international concern, the 2022–2023 mpox outbreak and the 2023–2024 mpox epidemic. In August 2024 it was reported that the UAE will donate Monkeypox vaccines to the Democratic Republic of Congo, Nigeria, South Africa, Ivory Coast, and Cameroon.[73]

Notes

  1. ^ The World Health Organization (the authority on disease names) announced the new name "mpox" in November 2022. But virus naming is the responsibility of the International Committee on the Taxonomy of Viruses (ICTV), which is currently reviewing all orthopoxvirus species. In June 2024, the official species name of the virus was updated to Orthopoxvirus monkeypox as part of this update.[2][3]

References

  1. ^ "Mpox (monkeypox) outbreak 2022". World Health Organization. Archived from the original on 7 January 2023. Retrieved 7 January 2023.
  2. ^ "Taxon Details | ICTV". ictv.global. Retrieved 30 August 2024.
  3. ^ "WHO recommends new name for monkeypox disease" (Press release). World Health Organization (WHO). 28 November 2022. Retrieved 29 November 2022.
  4. ^ Hibbert CM (11 August 2022). "Baby boomer alert: Will your childhood smallpox vaccine protect against monkeypox?". News @ Northeastern. Archived from the original on 18 November 2022. Retrieved 18 November 2022.
  5. ^ a b c d e f g h "WHO Factsheet – Mpox (Monkeypox)". World Health Organization (WHO). 18 April 2023. Retrieved 21 May 2023.
  6. ^ "Monkeypox in the U.S." U.S. Centers for Disease Control and Prevention (CDC). 18 October 2022. Archived from the original on 26 October 2022. Retrieved 26 October 2022.
  7. ^ Bunge EM, Hoet B, Chen L, Lienert F, Weidenthaler H, Baer LR, et al. (11 February 2022). "The changing epidemiology of human monkeypox – A potential threat? A systematic review". PLOS Neglected Tropical Diseases. 16 (2): e0010141. doi:10.1371/journal.pntd.0010141. PMC 8870502. PMID 35148313.
  8. ^ "Mpox in Animals". U.S. Centers for Disease Control and Prevention (CDC). 27 April 2023. Retrieved 8 June 2023.
  9. ^ Harapan H, Ophinni Y, Megawati D, Frediansyah A, Mamada SS, Salampe M, et al. (29 September 2022). "Monkeypox: A Comprehensive Review". Viruses. 14 (10): 2155. doi:10.3390/v14102155. ISSN 1999-4915. PMC 9612348. PMID 36298710.
  10. ^ Babkin, I, Babkina, I (March 2015). "The Origin of the variola Virus". Viruses. 7 (3): 1100–12. doi:10.3390/v7031100. ISSN 1999-4915. PMC 4379562. PMID 25763864.
  11. ^ a b c d e Lansiaux E, Jain N, Laivacuma S, Reinis A (December 2022). "The virology of human monkeypox virus (hMPXV): A brief overview". Virus Research. 322: 198932. doi:10.1016/j.virusres.2022.198932. PMC 9534104. PMID 36165924.
  12. ^ Tian D, Zheng T (30 June 2014). "Comparison and Analysis of Biological Agent Category Lists Based On Biosafety and Biodefense". PLOS ONE. 9 (6): e101163. Bibcode:2014PLoSO...9j1163T. doi:10.1371/journal.pone.0101163. ISSN 1932-6203. PMC 4076228. PMID 24979754.
  13. ^ Sklenovská N, Van Ranst M (4 September 2018). "Emergence of Monkeypox as the Most Important Orthopoxvirus Infection in Humans". Frontiers in Public Health. 6: 241. doi:10.3389/fpubh.2018.00241. ISSN 2296-2565. PMC 6131633. PMID 30234087.
  14. ^ a b Shchelkunov SN, Totmenin AV, Babkin IV, Safronov PF, Ryazankina OI, Petrov NA, et al. (November 2001). "Human monkeypox and smallpox viruses: genomic comparison". FEBS Letters. 509 (1): 66–70. Bibcode:2001FEBSL.509...66S. doi:10.1016/S0014-5793(01)03144-1. PMC 9533818. PMID 11734207.
  15. ^ Alakunle E, Moens U, Nchinda G, Okeke MI (November 2020). "Monkeypox Virus in Nigeria: Infection Biology, Epidemiology, and Evolution". Viruses. 12 (11): 1257. doi:10.3390/v12111257. PMC 7694534. PMID 33167496.
  16. ^ a b c Kaler J, Hussain A, Flores G, Kheiri S, Desrosiers D (July 2022). "Monkeypox: A Comprehensive Review of Transmission, Pathogenesis, and Manifestation". Cureus. 14 (7): e26531. doi:10.7759/cureus.26531. PMC 9345383. PMID 35928395.
  17. ^ Forni D, Cagliani R, Molteni C, Clerici M, Sironi M (November 2022). "Monkeypox virus: The changing facets of a zoonotic pathogen". Infection, Genetics and Evolution. 105: 105372. Bibcode:2022InfGE.10505372F. doi:10.1016/j.meegid.2022.105372. PMC 9534092. PMID 36202208.
  18. ^ Kugelman JR, Johnston SC, Mulembakani PM, Kisalu N, Lee MS, Koroleva G, et al. (February 2014). "Genomic variability of monkeypox virus among humans, Democratic Republic of the Congo". Emerging Infectious Diseases. 20 (2): 232–239. doi:10.3201/eid2002.130118. PMC 3901482. PMID 24457084.
  19. ^ "Monkeypox: What We Do and Don't Know About Recent Outbreaks". ASM.org. Archived from the original on 21 October 2022. Retrieved 21 October 2022.
  20. ^ Zandi M, Shafaati M, Hosseini F (1 February 2023). "Mechanisms of immune evasion of monkeypox virus". Frontiers in Microbiology. 14. doi:10.3389/fmicb.2023.1106247. ISSN 1664-302X. PMC 9928851. PMID 36819041.
  21. ^ a b c "Monkeypox: What We Do and Don't Know About Recent Outbreaks". ASM.org. Archived from the original on 21 October 2022. Retrieved 26 October 2022.
  22. ^ Moss B (September 2013). "Poxvirus DNA replication". Cold Spring Harbor Perspectives in Biology. 5 (9): a010199. doi:10.1101/cshperspect.a010199. PMC 3753712. PMID 23838441.
  23. ^ a b c d e Realegeno S, Puschnik AS, Kumar A, Goldsmith C, Burgado J, Sambhara S, et al. (June 2017). "Monkeypox Virus Host Factor Screen Using Haploid Cells Identifies Essential Role of GARP Complex in Extracellular Virus Formation". Journal of Virology. 91 (11): e00011–17. doi:10.1128/JVI.00011-17. PMC 5432867. PMID 28331092.
  24. ^ a b c Moss B (December 2016). "Membrane fusion during poxvirus entry". Seminars in Cell & Developmental Biology. 60: 89–96. doi:10.1016/j.semcdb.2016.07.015. PMC 5161597. PMID 27423915.
  25. ^ a b c Alkhalil A, Hammamieh R, Hardick J, Ichou MA, Jett M, Ibrahim S (July 2010). "Gene expression profiling of monkeypox virus-infected cells reveals novel interfaces for host-virus interactions". Virology Journal. 7: 173. doi:10.1186/1743-422X-7-173. PMC 2920256. PMID 20667104.
  26. ^ "Monkeypox". World Health Organization. Archived from the original on 21 April 2022. Retrieved 18 November 2022.
  27. ^ Kaler J, Hussain A, Flores G, Kheiri S, Desrosiers D (2022). "Monkeypox: A Comprehensive Review of Transmission, Pathogenesis, and Manifestation". Cureus. 14 (7): e26531. doi:10.7759/cureus.26531. ISSN 2168-8184. PMC 9345383. PMID 35928395.
  28. ^ "Mpox - How It Spreads". Centers for Disease Control and Prevention. 2 February 2023. Archived from the original on 21 May 2023. Retrieved 23 May 2023.
  29. ^ "Safer Sex, Social Gatherings, and Mpox". Centers for Disease Control and Prevention. 28 April 2023. Archived from the original on 29 May 2023. Retrieved 26 May 2023.
  30. ^ "WHO Factsheet – Mpox (Monkeypox)". World Health Organization (WHO). 18 April 2023. Archived from the original on 21 April 2022. Retrieved 21 May 2023.
  31. ^ a b "Brazil: Domestic puppy in Minas Gerais contracts monkeypox, Lived with confirmed human case". Outbreak News Today. 30 August 2022. Retrieved 10 June 2023.
  32. ^ Seang S, Burrel S, Todesco E, Leducq V, Monsel G, Le Pluart D, et al. (August 2022). "Evidence of human-to-dog transmission of monkeypox virus". The Lancet. 400 (10353): 658–659. doi:10.1016/s0140-6736(22)01487-8. ISSN 0140-6736. PMC 9536767. PMID 35963267.
  33. ^ a b "WHO Factsheet – Mpox (Monkeypox)". World Health Organization (WHO). 18 April 2023. Archived from the original on 21 April 2022. Retrieved 21 May 2023.
  34. ^ "Mpox Symptoms". U.S. Centers for Disease Control and Prevention (CDC). 15 March 2024. Archived from the original on 2 April 2024. Retrieved 22 August 2024.
  35. ^ Cite error: The named reference Mpox WHOfact2023 was invoked but never defined (see the help page).
  36. ^ McFarland SE, Marcus U, Hemmers L, Miura F, Iñigo Martínez J, Martínez FM, et al. (July 2023). "Estimated incubation period distributions of mpox using cases from two international European festivals and outbreaks in a club in Berlin, May to June 2022". Euro Surveillance. 28 (27). doi:10.2807/1560-7917.ES.2023.28.27.2200806. PMC 10370040. PMID 37410383.
  37. ^ a b "Mpox in Animals". U.S. Centers for Disease Control and Prevention (CDC). 4 January 2023. Archived from the original on 15 August 2024. Retrieved 25 May 2023.
  38. ^ Nash SL, Palmer SB, Wingfield WE (2009). "1.11. Zoonoses and zoonotic diseases". In Wingfield WE, Palmer SB (eds.). Veterinary Disaster Response. Iowa: John Wiley & Sons. pp. 167–168. ISBN 978-0-8138-1014-0. Archived from the original on 15 August 2024. Retrieved 1 June 2022.
  39. ^ Kantele A, Chickering K, Vapalahti O, Rimoin AW (August 2016). "Emerging diseases-the monkeypox epidemic in the Democratic Republic of the Congo". Clinical Microbiology and Infection. 22 (8): 658–659. doi:10.1016/j.cmi.2016.07.004. PMC 9533887. PMID 27404372.
  40. ^ Rigby J (14 August 2024). "Mpox vaccines likely months away even as WHO, Africa CDC discuss emergency". Reuters.
  41. ^ Cornall J (25 July 2022). "Bavarian Nordic gets European monkeypox approval for smallpox vaccine". Labiotech UG. Retrieved 15 August 2024.
  42. ^ "Mpox – Prevention". British Medical Journal. Retrieved 15 August 2024.
  43. ^ "The Vector center will soon commence the production of the smallpox vaccine". GxP News. 26 September 2023. Retrieved 15 August 2024.
  44. ^ "FDA Roundup: August 30, 2024". U.S. Food and Drug Administration (FDA) (Press release). 30 August 2024. Retrieved 1 September 2024.
  45. ^ "Emergent BioSolutions' ACAM2000, (Smallpox and Mpox (Vaccinia) Vaccine, Live) Receives U.S. FDA Approval for Mpox Indication; Public Health Mpox Outbreak Continues Across Africa & Other Regions" (Press release). Emergent Biosolutions. 29 August 2024. Retrieved 1 September 2024 – via GlobeNewswire.
  46. ^ "Interim Clinical Considerations for Use of Jynneos Vaccine for Mpox Prevention in the United States". U.S. Centers for Disease Control and Prevention (CDC). 22 April 2024. Retrieved 15 August 2024.
  47. ^ "Jynneos Vaccine Effectiveness". U.S. Centers for Disease Control and Prevention (CDC). 19 May 2023. Archived from the original on 24 May 2023. Retrieved 24 May 2023.
  48. ^ "Considerations on posology for the use of the vaccine Jynneos/ Imvanex (MVA-BN) against monkeypox" (PDF). European Medicines Agency (EMA). 19 August 2022. Archived (PDF) from the original on 28 May 2023. Retrieved 28 May 2023.
  49. ^ "Protecting you from mpox (monkeypox): information on the smallpox vaccination". GOV.UK. Archived from the original on 28 May 2023. Retrieved 28 May 2023.
  50. ^ "About Mpox". U.S. Centers for Disease Control and Prevention (CDC). Archived from the original on 11 March 2023. Retrieved 13 March 2023.
  51. ^ "Infection Prevention and Control of Mpox in Healthcare Settings". U.S. Centers for Disease Control and Prevention (CDC). 31 October 2022. Archived from the original on 18 May 2022. Retrieved 21 May 2022.
  52. ^ "Multi-country monkeypox outbreak in non-endemic countries: Update". World Health Organization (WHO). Archived from the original on 30 May 2022. Retrieved 28 May 2023.
  53. ^ a b c "Mpox". World Health Organization (WHO). 17 August 2024. Archived from the original on 19 August 2024. Retrieved 22 August 2024.
  54. ^ "CDC's Mpox Toolkit for Event Organizers". U.S. Centers for Disease Control and Prevention (CDC). 23 May 2023. Archived from the original on 28 May 2023. Retrieved 28 May 2023.
  55. ^ "Monkeypox – Campaign details". Department of Health and Social Care – Campaign Resource Centre. Archived from the original on 28 May 2023. Retrieved 28 May 2023.
  56. ^ "Mpox (Monkeypox) awareness campaign: Communications toolkit for stakeholders". Western Australia Department of Health. 10 June 2022. Archived from the original on 28 May 2023. Retrieved 28 May 2023.
  57. ^ "Mpox: background information". UK Health Security Agency. 19 August 2024. Archived from the original on 20 August 2024. Retrieved 22 August 2024.
  58. ^ "Patient's Guide to Mpox Treatment with Tecovirimat (TPOXX)". U.S. Centers for Disease Control and Prevention (CDC). 28 November 2022. Archived from the original on 24 May 2023. Retrieved 24 May 2023.
  59. ^ "Tecovirimat SIGA". European Medicines Agency (EMA). 28 January 2022. Archived from the original on 16 May 2022. Retrieved 19 May 2022.
  60. ^ "Mpox (formerly Monkeypox)". NIH: National Institute of Allergy and Infectious Diseases. 6 December 2022. Archived from the original on 23 May 2023. Retrieved 24 May 2023.
  61. ^ a b Fox T, Gould S, Princy N, Rowland T, Lutje V, Kuehn R, et al. (Cochrane Infectious Diseases Group) (March 2023). "Therapeutics for treating mpox in humans". The Cochrane Database of Systematic Reviews. 2023 (3): CD015769. doi:10.1002/14651858.CD015769. PMC 10012405. PMID 36916727.
  62. ^ "Mpox (monkeypox) – Treatment algorithm". BMJ Best Practice. Archived from the original on 4 December 2022. Retrieved 14 March 2023.
  63. ^ Lum FM, Torres-Ruesta A, Tay MZ, Lin RT, Lye DC, Rénia L, et al. (September 2022). "Monkeypox: disease epidemiology, host immunity and clinical interventions". Nature Reviews Immunology. 22 (10): 597–613. doi:10.1038/s41577-022-00775-4. ISSN 1474-1741. PMC 9443635. PMID 36064780.
  64. ^ Vogel L (15 August 2022). "Making sense of monkeypox death rates". CMAJ. 194 (31): E1097. doi:10.1503/cmaj.1096012. ISSN 0820-3946. PMC 9377567. PMID 35970550. Archived from the original on 31 May 2023. Retrieved 31 May 2023.
  65. ^ "Mpox (monkeypox) - Prognosis". BMJ Best Practice. Archived from the original on 31 May 2023. Retrieved 31 May 2023.
  66. ^ a b "Monkeypox: experts give virus variants new names". World Health Organization. Archived from the original on 19 August 2022. Retrieved 19 August 2022.
  67. ^ "Monkeypox". www.who.int. Archived from the original on 21 April 2022. Retrieved 19 August 2022.
  68. ^ Likos AM, Sammons SA, Olson VA, Frace AM, Li Y, Olsen-Rasmussen M, et al. (October 2005). "A tale of two clades: monkeypox viruses". The Journal of General Virology. 86 (Pt 10): 2661–2672. doi:10.1099/vir.0.81215-0. PMID 16186219.
  69. ^ "Monkeypox". New Scientist. 80. Reed Business Information: 682–. 30 November 1978. ISSN 0262-4079. Archived from the original on 13 January 2023. Retrieved 3 November 2016.
  70. ^ Igiebor FA, Agbontaen OJ, Egharevba PA, Amengialue OO, Ehiaghe JI, Ovwero E, et al. (May 2022). "Monkeypox: Emerging and Re-Emerging Threats in Nigeria". Journal of Basic and Applied Sciences. 7 (1). Benin City, Nigeria: Faculty of Science, Benson Idahosa University: 119–132. Archived from the original on 7 June 2022. Retrieved 7 June 2022.
  71. ^ Meyer H, Perrichot M, Stemmler M, Emmerich P, Schmitz H, Varaine F, et al. (August 2002). "Outbreaks of disease suspected of being due to human monkeypox virus infection in the Democratic Republic of Congo in 2001". Journal of Clinical Microbiology. 40 (8): 2919–2921. doi:10.1128/JCM.40.8.2919-2921.2002. PMC 120683. PMID 12149352.
  72. ^ "2003 U.S. Outbreak Monkeypox". U.S. Centers for Disease Control and Prevention (CDC). 11 May 2015. Archived from the original on 15 October 2017. Retrieved 15 October 2017.
  73. ^ "UAE donates monkeypox vaccines to 5 African countries". gulfnews.com. 31 August 2024. Retrieved 22 September 2024.