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African mpox epidemic

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African mpox epidemic
  Countries with 1,000+ cases
  Countries with 100–999 cases
  Countries with 1–99 cases
  No confirmed cases
DiseaseMpox
LocationAfrica (primarily)
DateSeptember 2023 – present
Confirmed cases14,652
Deaths
517

An epidemic of a new clade[1] of mpox began in Africa at least as early as September 2023.[2][3] As of August 2024, more than 17,000 cases have been reported, with 517 fatalities.[4] On 14 August 2024, the World Health Organization declared the epidemic a public health emergency of international concern (PHEIC).[1][5]

Background

Main article: 2022–2023 mpox outbreak

In May 2022, the World Health Organization (WHO) declared a prior mpox outbreak, involving a different clade of virus, as a global health emergency. The disease had infected 87,000 individuals and caused 140 deaths when the WHO ended its global emergency in May of the following year.[6]

Outbreak

Reported casualties

As of 11 August 2024
Country Cases[7][8] Deaths[7][8]
Democratic Republic of the Congo Democratic Republic of the Congo 14,091[a] 511[b]
 Central African Republic 213[c] 0
 Republic of the Congo 146[d] 1
 Burundi 83 0
 Cameroon 35[e] 2
Nigeria Nigeria 24 0
 South Africa 24 3
 Kenya 12[f] 0
 Ivory Coast 7 0
 Liberia 5 0
 Ghana 4 0
 Rwanda 4 0
 Uganda 2 0
 Pakistan >1[9] 0
 Sweden 1[10] 0
Total 14,652 517
  1. ^ 1,888 of which have been laboratory confirmed
  2. ^ 8 of which have been laboratory confirmed
  3. ^ 28 of which have been laboratory confirmed
  4. ^ 19 of which have been laboratory confirmed
  5. ^ 5 of which have been laboratory confirmed
  6. ^ One of which has been laboratory confirmed

Timeline

Mpox cases from clade Ib infections were growing in the Democratic Republic of the Congo (DRC) by September 2023,[2][3] with several of them being identified in Kamituga, a mining town in the province of South Kivu.[2][11] A nationwide outbreak was reported in January 2024.[2][12]

In August 2024, the Africa Centers for Disease Control and Prevention (ACDC) declared that spreading mpox outbreaks in Africa had become a public health emergency, with over 517 deaths being reported.[13][14] As a result, the organization requested the help and intervention of the international community to control the spread of the virus and treat infected patients.[13] The ACDC stated that the fatality rate of the strain of virus causing the outbreak was 3–4%, significantly higher than the less than 1% fatality rate recorded during the 2022–2023 mpox outbreak.[13] On 14 August, the World Health Organization declared the epidemic a public health emergency of international concern (PHEIC), or global health emergency.[1][5]

In 2024, fifteen countries were reported to have identified cases of mpox;[8] over 96% of all reported cases and fatalities from the disease were confirmed in the DRC, with 16,839 reported cases and 501 reported deaths.[13] The ACDC reported that 70% of reported cases in the DRC were in children under 15, as that demographic represented 85% of reported deaths.[13] Epidemiologist Jacques Alonda expressed concern over the disease's spread in refugee camps in the DRC and its neighbor countries, especially due to the amount of pressure already applied on the national healthcare system by concurrent outbreaks of cholera and measles, as well as widespread malnutrition.[13]

Countries with widespread transmission

Democratic Republic of the Congo

Further information: Mpox in the Democratic Republic of the Congo

As of 16 August 2024, a cumulative total of 16,839 suspected cases of mpox (at least 1,888 of which were laboratory confirmed) and 501 deaths (at least 8 of which laboratory confirmed) have been reported in the Democratic Republic of the Congo (DRC).[7][8]

Countries with limited local transmission

As of August 2024, fifteen countries have reported cases of mpox;[8] the WHO reported that new cases of the mpox strain, all of which linked to the outbreak in the DRC,[13] had been identified for the first time in four East African nations: Burundi, Kenya, Rwanda and Uganda.[13][8] Ivory Coast also reported new cases for the first time.[8]

Central African Republic

On 30 July 2024, the Minister of Health of the Central African Republic, Pierre Somsé, declared an outbreak of mpox in Bangui, following a period of time when the disease was mostly restricted to rural areas.[15] Somsé said that some families in the country were hiding infected relatives in fear of being stigmatized, thus increasing the risk of transmission of the disease.[15]

Sweden

On 15 August 2024, Sweden's Public Health Agency reported the first case outside of Africa, which involved a person who had contracted Clade I mpox during a stay in an area of Africa affected by an outbreak of the disease.[10][16][17] In a public statement, the agency said that, while the case in itself didn't represent a higher risk to the general population,[10][17] occasional imported cases "may continue to occur".[10][18]

Pakistan

On 15 August 2024, Pakistan's National Command and Operation Center (NCOC) reported a suspected case of mpox in the province of Khyber Pakhtunkhwa,[3] involving a resident of Mardan who had recently returned from an Arab Gulf state;[19] the person was later confirmed to have been diagnosed with mpox by the Pakistani Ministry of Health, although sequencing of viral samples was still ongoing in order to determine the nature of the variant.[9][19][20]

Virology

Mpox is caused by the monkeypox virus. The virus is transmitted through close contact with infected animals or people,[21] including face-to-face talk and other kinds of physical contact,[22][23] contaminated bed sheets,[22] clothing or needles,[23] consumption of contaminated meat and sexual contact.[21][22]

In April 2024, researchers identified a novel subgroup of clade I of mpox in Kamituga, a mining town in South Kivu, Democratic Republic of the Congo.[2][24] Epidemiologists reported that the new variant — later named "clade Ib"[22][23] or "clade 1b"[23] — had the potential to spread with greater ease compared to other mpox strains.[2] The researchers theorized that the strain had undergone genetic mutations allowing it to spread more easily through human transmission, due to the mining town's remote location preventing most occasions of contact with animals that naturally carry and spread the disease.[2]

Dr. Placide Mbala-Kingebeni of Congo's National Institute of Biomedical Research said that the results of the analysis marked "a new phase of mpox" from the prior outbreak in 2022 and 2023, since the new strain reportedly produced more mild lesions, predominantly on the genitals, making the disease more difficult to diagnose compared to strains that caused chest, feet, and hand lesions. Mbala-Kingebeni also noted that there might be a higher risk of silent transmission of the disease due to its different manifestations.[2] The research team determined the detected form to be a Clade I type strain,[2] which historically caused more severe symptoms in comparison to the Clade II type that was predominant during the 2022–2023 mpox outbreak.[2][23]

Prevention and mitigation

Until June 2024, mpox vaccines were not approved by any African government and the efficacy of vaccines had not been attested by the Strategic Advisory Group of Experts. The director of the WHO's Health Emergencies Programme, Michael J. Ryan, noted in an interview with NPR that the Democratic Republic of the Congo was simultaneously facing several other endemic diseases, including measles and cholera. Up to that point, only two labs in the Democratic Republic of the Congo were able to perform polymerase chain reaction testing for mpox.[25]

Also in June 2024, Reuters reported that authorities in the DRC had approved the vaccines Jynneos, manufactured by Bavarian Nordic, and LC16, manufactured by KM Biologics, for emergency use.[26] Jynneos was later approved in Nigeria, also for emergency use.[27][28]

In August of the same year, the chief executive officer of GAVI, Sania Nishtar, said the organization had already allocated up to $500 million as part of their "First Response" fund — which had originally been set up during the COVID-19 pandemic, mostly through donations by governments and global health funders, but was later kept in place in order to respond to new health emergencies.[3] However, Nishtar said that GAVI and UNICEF still had to wait for official requests from the countries affected by the outbreak, as well as definitive approval of mpox vaccines from the World Health Organization, in order to start ordering the doses and distributing them to affected nations.[3] In response, the WHO announced the launch of a process that would enable access to vaccines for emergency use in countries whose national approval was still pending.[27]

On 14 August, the U.S. Department of Health and Human Services (HHS) announced that the national government would donate 50,000 doses of the Jynneos vaccine to the DRC.[27][29] The HHS also said that the U.S. had previously provided $17 million USD to "support clade I mpox preparedness and response efforts in Central and Eastern Africa".[29]

On 16 August, Bavarian Nordic announced in a press statement that it had submitted clinical data to the European Medicines Agency to support the extension of the approval of Jynneos/Imvanex to include adolescents aged 12 to 17 years;[28][30] the company cited as evidence the early results of a trial — sponsored by the NIH's National Institutes of Allergy and Infectious Diseases (NIAID) —[30][31] in 315 adolescents included in the aforementioned age range and 211 adults aged 18 to 50 years,[32] which showed that both the immune responses and the safety profile were similar between the two age groups after vaccination with two standard doses.[30][31][32] In the same statement, Bavarian Nordic also said that a study of the vaccine in children aged 2 to 12 years would take place in the DRC and Uganda later in 2024.[30]

On 16 August, China's General Administration of Customs said in a statement that national authorities would deploy screening measures for people and goods entering the country from areas affected by the outbreak for the following six months.[31][33]

References

  1. ^ a b c "WHO Director-General declares mpox outbreak a public health emergency of international concern". www.who.int. World Health Organization. 14 August 2024. Retrieved 16 August 2024.
  2. ^ a b c d e f g h i j Cheng, Maria; Christina, Malkia (2 May 2024). "A new form of mpox that may spread more easily found in Congo's biggest outbreak". Associated Press. Archived from the original on 14 August 2024. Retrieved 14 August 2024.
  3. ^ a b c d e Junaidi, Ikram (15 August 2024). "NCOC issues advisory as first suspected mpox case quarantined". Dawn. Reuters. Agence France-Presse. Archived from the original on 16 August 2024. Retrieved 15 August 2024.
  4. ^ Bariyo, Nicholas (14 August 2024). "Rapid Spread of Mpox in Africa Is Global Health Emergency, WHO Says". The Wall Street Journal. Archived from the original on 14 August 2024. Retrieved 14 August 2024.
  5. ^ a b Mandavilli, Apoorva (14 August 2024). "W.H.O. Declares Global Emergency Over New Mpox Outbreak". The New York Times. Archived from the original on 15 August 2024. Retrieved 14 August 2024.
  6. ^ Mandavilli, Apoorva (11 May 2023). "W.H.O. Ends Mpox Global Emergency". The New York Times. Archived from the original on 15 August 2024. Retrieved 14 August 2024.
  7. ^ a b c Africa Centres for Disease Control and Prevention 2024, p. 1.
  8. ^ a b c d e f g World Health Organization 2024, p. 2-3.
  9. ^ a b "Pakistan says at least one case of mpox virus detected". Al Jazeera. 16 August 2024. Retrieved 16 August 2024.
  10. ^ a b c d "One case of mpox clade I reported in Sweden". Public Health Agency of Sweden. 15 August 2024. Archived from the original on 16 August 2024. Retrieved 15 August 2024.
  11. ^ Newey, Sarah (16 April 2024). "Mutated strain of mpox with 'pandemic potential' found in DRC mining town". The Daily Telegraph. Archived from the original on 15 August 2024. Retrieved 14 August 2024.
  12. ^ Scott, Dylan (24 January 2024). "A deadly new outbreak is testing Africa's ambitious public health efforts". Vox. Archived from the original on 8 August 2024. Retrieved 14 August 2024.
  13. ^ a b c d e f g h Cheng, Maria (14 August 2024). "WHO declares mpox outbreaks in Africa a global health emergency as a new form of the virus spreads". Associated Press. Archived from the original on 16 August 2024. Retrieved 14 August 2024.
  14. ^ "Explainer - Declaration of Public Health Emergency of Continental Security". Africa Centres for Disease Control and Prevention. 16 August 2024. Retrieved 16 August 2024.
  15. ^ a b Chibelushi, Wedaeli (30 July 2024). "Central African Republic latest to declare mpox outbreak". BBC News. Archived from the original on 14 August 2024. Retrieved 14 August 2024.
  16. ^ Kirby, Paul (15 August 2024). "First case of more contagious mpox found outside Africa". BBC. Archived from the original on 15 August 2024. Retrieved 15 August 2024.
  17. ^ a b "Första bekräftade fallet av nya mpox-varianten i Sverige" [First confirmed case of the new mpox variant in Sweden]. SVT Nyheter (in Swedish). 15 August 2024. Archived from the original on 15 August 2024. Retrieved 15 August 2024.
  18. ^ Mandavilli, Apoorva (15 August 2024). "How Did Mpox Become a Global Emergency? What's Next?". The New York Times. ISSN 0362-4331. Archived from the original on 15 August 2024. Retrieved 15 August 2024.
  19. ^ a b Ali, Mushtaq; Greenfield, Charlotte (16 August 2024). "Mpox virus detected in Pakistan, health authorities say". Reuters. Retrieved 16 August 2024.
  20. ^ Khan, Riaz (16 August 2024). "Pakistan's health ministry confirms a case of mpox but more tests are being done for its variant". Associated Press. Retrieved 16 August 2024.
  21. ^ a b Sampson, Eve (14 August 2024). "What to Know About Mpox". The New York Times. Archived from the original on 16 August 2024. Retrieved 14 August 2024.
  22. ^ a b c d Lay, Kat (15 August 2024). "What is mpox and why has it been declared a global health emergency?". The Guardian. ISSN 0261-3077. Retrieved 16 August 2024.
  23. ^ a b c d e "Cosa sappiamo della nuova variante di mpox". Il Post (in Italian). 16 August 2024. Retrieved 16 August 2024.
  24. ^ Murhula Masirika et al. 2024, p. 1.
  25. ^ Emmanuel, Gabrielle (2 April 2024). "Major mpox outbreak in the Democratic Republic of Congo is a worry to disease docs". NPR. Archived from the original on 14 August 2024. Retrieved 14 August 2024.
  26. ^ Rigby, Jennifer (27 June 2024). "Congo authorities approve mpox vaccines to try to contain outbreak". Reuters. Retrieved 14 August 2024.
  27. ^ a b c Johnston, Ian; Peel, Michael (15 August 2024). "Vaccine bottlenecks pose risk to mpox response as Sweden reports variant case". www.ft.com. The Financial Times. Retrieved 16 August 2024.
  28. ^ a b Gilchrist, Karen (16 August 2024). "Mpox vaccine maker Bavarian Nordic seeks 'critical' EU approval for teens after WHO declares health emergency". CNBC. Retrieved 16 August 2024.
  29. ^ a b "United States Government's Response to the Clade I Mpox Outbreak in the Democratic Republic of the Congo and Other Countries in the Region". www.hhs.gov. United States Department of Health and Human Services. 14 August 2024. Retrieved 16 August 2024.
  30. ^ a b c d Collins, Helen (16 August 2024). "Bavarian Nordic asks EU to extend mpox shot license to adolescents". POLITICO. Retrieved 16 August 2024.
  31. ^ a b c Sambado, Cristina (16 August 2024). "Mpox. Fabricante dinamarquês da vacina quer aprovação para adolescentes". RTP (in European Portuguese). Retrieved 16 August 2024.
  32. ^ a b "A Phase 2 Randomized Multisite Trial to Inform Public Health Strategies Involving the Use of MVA-BN Vaccine for Mpox". www.clinicaltrials.gov. National Library of Medicine. 9 August 2024. Retrieved 16 August 2024.
  33. ^ Mai, Jun; Ziwen, Zhao (16 August 2024). "China to screen arrivals showing mpox symptoms as cases spread outside Africa". South China Morning Post. Retrieved 16 August 2024.

Cited works

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