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  1. Article: The unusual finding of peripheral lymphadenopathy among confirmed Lassa fever patients in Nigeria.

    Owhin, Sampson O / Abejegah, Chukuyem / Olatunde, Lanre O / Adedosu, Nelson A / Ayodeji, Olufemi O / Folorunso, Timothy R / Azegbeobor, Joachim / Akhideno, Peter E / Akpede, George O / Ayeyemi, Joseph A / Olowosusi, Oyebanji Z / Erameh, Cyril / Ahmed, Liasu A

    Future science OA

    2023  Volume 9, Issue 6, Page(s) FSO860

    Abstract: Lassa fever is a viral haemorrhagic fever belonging to the arenaviridae family that is well known to be endemic to West Africa. The clinical presentation of the disease ranges from asymptomatic to fulminant illness. Lymphadenopathy a clinical ... ...

    Abstract Lassa fever is a viral haemorrhagic fever belonging to the arenaviridae family that is well known to be endemic to West Africa. The clinical presentation of the disease ranges from asymptomatic to fulminant illness. Lymphadenopathy a clinical manifestation of inflammation, infection, or malignancy has not been widely reported in Lassa fever disease. We report two cases of Lassa fever disease presenting with lymphadenopathy.
    Language English
    Publishing date 2023-05-01
    Publishing country England
    Document type Case Reports
    ISSN 2056-5623
    ISSN 2056-5623
    DOI 10.2144/fsoa-2022-0086
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Circulation of Lassa virus across the endemic Edo-Ondo axis, Nigeria, with cross-species transmission between multimammate mice.

    Adesina, Adetunji Samuel / Oyeyiola, Akinlabi / Obadare, Adeoba / Igbokwe, Joseph / Abejegah, Chukwuyem / Akhilomen, Patience / Bangura, Umaru / Asogun, Danny / Tobin, Ekaete / Ayodeji, Olufemi / Osoniyi, Omolaja / Davis, Chris / Thomson, Emma C / Pahlmann, Meike / Günther, Stephan / Fichet-Calvet, Elisabeth / Olayemi, Ayodeji

    Emerging microbes & infections

    2023  Volume 12, Issue 1, Page(s) 2219350

    Abstract: We phylogenetically compared sequences of the zoonotic Lassa virus (LASV) obtained ... ...

    Abstract We phylogenetically compared sequences of the zoonotic Lassa virus (LASV) obtained from
    MeSH term(s) Humans ; Mice ; Animals ; Lassa virus/genetics ; Nigeria/epidemiology ; Phylogeny ; Lassa Fever/epidemiology ; Lassa Fever/veterinary ; Murinae
    Language English
    Publishing date 2023-06-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2681359-2
    ISSN 2222-1751 ; 2222-1751
    ISSN (online) 2222-1751
    ISSN 2222-1751
    DOI 10.1080/22221751.2023.2219350
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Immunological insights into COVID-19 in Southern Nigeria.

    Ugwu, Chinedu A / Alao, Oluwasina / John, Oluwagboadurami G / Akinnawo, Blossom / Ajayi, Israel / Odebode, Ooreofe / Bejide, Ifeoluwa / Campbell, Allan / Campbell, Julian / Adole, Jolly A / B Olawoye, Idowu / Akano, Kazeem / Okolie, Johnson / Eromon, Philomena / Olaitan, Peter / Olagunoye, Ajibola / Adebayo, Ibukun / Adebayo, Victor / Babalola, Elizabeth /
    Abioye, Omowumi / Ajayi, Nnennaya / Ogah, Emeka / Ukwaja, Kingsley / Okoro, Sylvanus / Oje, Ogbonnaya / Kingsley, Ojide Chiedozie / Eke, Matthew / Onyia, Venatius / Achonduh-Atijegbe, Olivia / Ewah, Friday Elechi / Obasi, Mary / Igwe, Violet / Ayodeji, Olufemi / Chukwuyem, Abejegah / Owhin, Sampson / Oyejide, Nicholas / Abah, Sylvester / Ingbian, Winifred / Osoba, Moyosoore / Alebiosu, Ahmed / Nadesalingam, Angalee / Aguinam, Ernest T / Carnell, George / Krause, Nina / Chan, Andrew / George, Charlotte / Kinsley, Rebecca / Tonks, Paul / Temperton, Nigel / Heeney, Jonathan / Happi, Christian

    Frontiers in immunology

    2024  Volume 15, Page(s) 1305586

    Abstract: Introduction: One of the unexpected outcomes of the COVID-19 pandemic was the relatively low levels of morbidity and mortality in Africa compared to the rest of the world. Nigeria, Africa's most populous nation, accounted for less than 0.01% of the ... ...

    Abstract Introduction: One of the unexpected outcomes of the COVID-19 pandemic was the relatively low levels of morbidity and mortality in Africa compared to the rest of the world. Nigeria, Africa's most populous nation, accounted for less than 0.01% of the global COVID-19 fatalities. The factors responsible for Nigeria's relatively low loss of life due to COVID-19 are unknown. Also, the correlates of protective immunity to SARS-CoV-2 and the impact of pre-existing immunity on the outcome of the COVID-19 pandemic in Africa are yet to be elucidated. Here, we evaluated the natural and vaccine-induced immune responses from vaccinated, non-vaccinated and convalescent individuals in Southern Nigeria throughout the three waves of the COVID-19 pandemic in Nigeria. We also examined the pre-existing immune responses to SARS-CoV-2 from samples collected prior to the COVID-19 pandemic.
    Methods: We used spike RBD and N- IgG antibody ELISA to measure binding antibody responses, SARS-CoV-2 pseudotype assay protocol expressing the spike protein of different variants (D614G, Delta, Beta, Omicron BA1) to measure neutralizing antibody responses and nucleoprotein (N) and spike (S1, S2) direct ex vivo interferon gamma (IFNγ) T cell ELISpot to measure T cell responses.
    Result: Our study demonstrated a similar magnitude of both binding (N-IgG (74% and 62%), S-RBD IgG (70% and 53%) and neutralizing (D614G (49% and 29%), Delta (56% and 47%), Beta (48% and 24%), Omicron BA1 (41% and 21%)) antibody responses from symptomatic and asymptomatic survivors in Nigeria. A similar magnitude was also seen among vaccinated participants. Interestingly, we revealed the presence of preexisting binding antibodies (N-IgG (60%) and S-RBD IgG (44%)) but no neutralizing antibodies from samples collected prior to the pandemic.
    Discussion: These findings revealed that both vaccinated, non-vaccinated and convalescent individuals in Southern Nigeria make similar magnitude of both binding and cross-reactive neutralizing antibody responses. It supported the presence of preexisting binding antibody responses among some Nigerians prior to the COVID-19 pandemic. Lastly, hybrid immunity and heterologous vaccine boosting induced the strongest binding and broadly neutralizing antibody responses compared to vaccine or infection-acquired immunity alone.
    MeSH term(s) Humans ; Antibodies, Neutralizing ; Broadly Neutralizing Antibodies ; COVID-19/immunology ; Enzyme-Linked Immunospot Assay ; Immunoglobulin G ; Nigeria ; Pandemics ; SARS-CoV-2 ; West African People
    Chemical Substances Antibodies, Neutralizing ; Broadly Neutralizing Antibodies ; Immunoglobulin G
    Language English
    Publishing date 2024-01-23
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2024.1305586
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Association of hypoalbuminemia and reversal of albumin-to-globulin ratio with morbidity outcome among hospitalized Lassa fever infected patients at a dedicated treatment center in Ondo state, south-western Nigeria.

    Owhin, Sampson Omagbemi / Abejegah, Chukwuyem / Fasipe, Olumuyiwa John / Oke, Clement / Abidoye, Abiodun / Osagbaekhoe, Austine / Awe, Abimbola / Etafo, Ijeoma / Iredia, Evbaruese / Ayodeji, Olufemi / Olatunde, Lanre / Ojo, Olalekan / Alabi, Josephine / Akhideno, Peter Ehizokhale / Ejiyere, Harrison / Stephen Adeke, Azuka / Azegbeobor, Joachim / Ahmed, Liasu

    Future science OA

    2020  Volume 6, Issue 10, Page(s) FSO620

    Abstract: Background: As of this present moment, there is paucity of data on report concerning the association between hypoalbuminaemia or reversal of albumin-to-globulin ratio and morbidity outcome in Lassa fever (LF) infection as a crucial determinant ... ...

    Abstract Background: As of this present moment, there is paucity of data on report concerning the association between hypoalbuminaemia or reversal of albumin-to-globulin ratio and morbidity outcome in Lassa fever (LF) infection as a crucial determinant prognostic-predictor factor for treatment-survival outcome.
    Aim: This study was designed to determine the association between hypoalbuminaemia, reversal of albumin-to-globulin ratio and morbidity outcome among confirmed LF infected patients.
    Methodology: This was a descriptive retrospective study involving the assessment of records of confirmed LF infected patients that were managed at the center from November 2018 to October 2019.
    Results: Out of 83 recruited participants with complete records, 66 (79.5%) had hypoalbuminaemia, 74 (89.2%) had reversal of albumin-to-globulin ratio. A higher mean value of total white blood cell (WBC) count was observed among patients with hypoalbuminaemia (p < 0.0001) and reversal of albumin-to-globulin ratio (p < 0.0001) when compared to patients with normal values, respectively. Also, this study showed statistically significant associations between serum albumin level versus total WBC count (p < 0.0001), acute kidney injury (AKI; p = 0.009), bleeding diathesis (p < 0.0001), and occurrence of pregnancy miscarriage (p < 0.0001).
    Conclusion: There is a baseline hypoalbuminaemia and reversal of albumin-to-globulin ratio among confirmed LF infected patients. Based on these findings, the serum level of albumin and albumin-to-globulin ratio at presentation may serve as simple early biomarkers to identify patients at high risk for a complicated clinical course of disease. This study also reveals that those hospitalized LF infected patients with hypoalbuminemia and/or reversal of albumin-to-globulin ratio tend to have leucocytosis and experience prolonged duration of illness.
    Language English
    Publishing date 2020-08-13
    Publishing country England
    Document type Journal Article
    ISSN 2056-5623
    ISSN 2056-5623
    DOI 10.2144/fsoa-2020-0075
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A prospective, multi-site, cohort study to estimate incidence of infection and disease due to Lassa fever virus in West African countries (the Enable Lassa research programme)-Study protocol.

    Penfold, Suzanne / Adegnika, Ayola Akim / Asogun, Danny / Ayodeji, Olufemi / Azuogu, Benedict N / Fischer, William A / Garry, Robert F / Grant, Donald Samuel / Happi, Christian / N'Faly, Magassouba / Olayinka, Adebola / Samuels, Robert / Sibley, Jefferson / Wohl, David A / Accrombessi, Manfred / Adetifa, Ifedayo / Annibaldis, Giuditta / Camacho, Anton / Dan-Nwafor, Chioma /
    Deha, Akpénè Ruth Esperencia / DeMarco, Jean / Duraffour, Sophie / Goba, Augustine / Grais, Rebecca / Günther, Stephan / Honvou, Énagnon Junior Juvénal Prince / Ihekweazu, Chikwe / Jacobsen, Christine / Kanneh, Lansana / Momoh, Mambu / Ndiaye, Aminata / Nsaibirni, Robert / Okogbenin, Sylvanus / Ochu, Chinwe / Ogbaini, Ephraim / Logbo, Énagnon Parsifal Marie Alexandre / Sandi, John Demby / Schieffelin, John S / Verstraeten, Thomas / Vielle, Nathalie J / Yadouleton, Anges / Yovo, Emmanuel Koffi

    PloS one

    2023  Volume 18, Issue 3, Page(s) e0283643

    Abstract: Background: Lassa fever (LF), a haemorrhagic illness caused by the Lassa fever virus (LASV), is endemic in West Africa and causes 5000 fatalities every year. The true prevalence and incidence rates of LF are unknown as infections are often asymptomatic, ...

    Abstract Background: Lassa fever (LF), a haemorrhagic illness caused by the Lassa fever virus (LASV), is endemic in West Africa and causes 5000 fatalities every year. The true prevalence and incidence rates of LF are unknown as infections are often asymptomatic, clinical presentations are varied, and surveillance systems are not robust. The aim of the Enable Lassa research programme is to estimate the incidences of LASV infection and LF disease in five West African countries. The core protocol described here harmonises key study components, such as eligibility criteria, case definitions, outcome measures, and laboratory tests, which will maximise the comparability of data for between-country analyses.
    Method: We are conducting a prospective cohort study in Benin, Guinea, Liberia, Nigeria (three sites), and Sierra Leone from 2020 to 2023, with 24 months of follow-up. Each site will assess the incidence of LASV infection, LF disease, or both. When both incidences are assessed the LASV cohort (nmin = 1000 per site) will be drawn from the LF cohort (nmin = 5000 per site). During recruitment participants will complete questionnaires on household composition, socioeconomic status, demographic characteristics, and LF history, and blood samples will be collected to determine IgG LASV serostatus. LF disease cohort participants will be contacted biweekly to identify acute febrile cases, from whom blood samples will be drawn to test for active LASV infection using RT-PCR. Symptom and treatment data will be abstracted from medical records of LF cases. LF survivors will be followed up after four months to assess sequelae, specifically sensorineural hearing loss. LASV infection cohort participants will be asked for a blood sample every six months to assess LASV serostatus (IgG and IgM).
    Discussion: Data on LASV infection and LF disease incidence in West Africa from this research programme will determine the feasibility of future Phase IIb or III clinical trials for LF vaccine candidates.
    MeSH term(s) Humans ; Cohort Studies ; Immunoglobulin G ; Incidence ; Lassa Fever/epidemiology ; Lassa Fever/diagnosis ; Lassa virus ; Liberia ; Prospective Studies ; Multicenter Studies as Topic
    Chemical Substances Immunoglobulin G
    Language English
    Publishing date 2023-03-30
    Publishing country United States
    Document type Clinical Trial Protocol ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0283643
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Increase in Lassa Fever Cases in Nigeria, January-March 2018.

    Ilori, Elsie A / Frank, Christina / Dan-Nwafor, Chioma C / Ipadeola, Oladipupo / Krings, Amrei / Ukponu, Winifred / Womi-Eteng, Oboma E / Adeyemo, Ayodele / Mutbam, Samuel K / Musa, Emmanuel O / Lasuba, Clement L P / Alemu, Wondimagegnehu / Okogbenin, Sylvanus / Ogbaini, Ephraim / Unigwe, Uche / Ogah, Emeka / Onoh, Robinson / Abejegah, Chukwuyem / Ayodeji, Olufemi /
    Ihekweazu, Chikwe

    Emerging infectious diseases

    2019  Volume 25, Issue 5, Page(s) 1026–1027

    Abstract: We reviewed data pertaining to the massive wave of Lassa fever cases that occurred in Nigeria in 2018. No new virus strains were detected, but in 2018, the outbreak response was intensified, additional diagnostic support was available, and surveillance ... ...

    Abstract We reviewed data pertaining to the massive wave of Lassa fever cases that occurred in Nigeria in 2018. No new virus strains were detected, but in 2018, the outbreak response was intensified, additional diagnostic support was available, and surveillance sensitivity increased. These factors probably contributed to the high case count.
    MeSH term(s) Animals ; Disease Outbreaks ; History, 21st Century ; Humans ; Incidence ; Lassa Fever/diagnosis ; Lassa Fever/epidemiology ; Lassa Fever/history ; Lassa Fever/virology ; Lassa virus/classification ; Lassa virus/genetics ; Lassa virus/isolation & purification ; Nigeria/epidemiology ; Public Health Surveillance ; Seasons
    Language English
    Publishing date 2019-05-17
    Publishing country United States
    Document type Historical Article ; Journal Article
    ZDB-ID 1380686-5
    ISSN 1080-6059 ; 1080-6040
    ISSN (online) 1080-6059
    ISSN 1080-6040
    DOI 10.3201/eid2505.181247
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Epidemiologic and Clinical Features of Lassa Fever Outbreak in Nigeria, January 1-May 6, 2018.

    Ilori, Elsie A / Furuse, Yuki / Ipadeola, Oladipupo B / Dan-Nwafor, Chioma C / Abubakar, Anwar / Womi-Eteng, Oboma E / Ogbaini-Emovon, Ephraim / Okogbenin, Sylvanus / Unigwe, Uche / Ogah, Emeka / Ayodeji, Olufemi / Abejegah, Chukwuyem / Liasu, Ahmed A / Musa, Emmanuel O / Woldetsadik, Solomon F / Lasuba, Clement L P / Alemu, Wondimagegnehu / Ihekweazu, Chikwe

    Emerging infectious diseases

    2019  Volume 25, Issue 6, Page(s) 1066–1074

    Abstract: Lassa fever (LF) is endemic to Nigeria, where the disease causes substantial rates of illness and death. In this article, we report an analysis of the epidemiologic and clinical aspects of the LF outbreak that occurred in Nigeria during January 1-May 6, ... ...

    Abstract Lassa fever (LF) is endemic to Nigeria, where the disease causes substantial rates of illness and death. In this article, we report an analysis of the epidemiologic and clinical aspects of the LF outbreak that occurred in Nigeria during January 1-May 6, 2018. A total of 1,893 cases were reported; 423 were laboratory-confirmed cases, among which 106 deaths were recorded (case-fatality rate 25.1%). Among all confirmed cases, 37 occurred in healthcare workers. The secondary attack rate among 5,001 contacts was 0.56%. Most (80.6%) confirmed cases were reported from 3 states (Edo, Ondo, and Ebonyi). Fatal outcomes were significantly associated with being elderly; no administration of ribavirin; and the presence of a cough, hemorrhaging, and unconsciousness. The findings in this study should lead to further LF research and provide guidance to those preparing to respond to future outbreaks.
    MeSH term(s) Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Disease Outbreaks ; Female ; Geography, Medical ; History, 21st Century ; Humans ; Infant ; Infant, Newborn ; Lassa Fever/diagnosis ; Lassa Fever/epidemiology ; Lassa Fever/history ; Lassa Fever/virology ; Lassa virus ; Male ; Middle Aged ; Mortality ; Nigeria/epidemiology ; Odds Ratio ; Prevalence ; Public Health Surveillance ; Seasons ; Symptom Assessment ; Young Adult
    Language English
    Publishing date 2019-05-20
    Publishing country United States
    Document type Historical Article ; Journal Article
    ZDB-ID 1380686-5
    ISSN 1080-6059 ; 1080-6040
    ISSN (online) 1080-6059
    ISSN 1080-6040
    DOI 10.3201/eid2506.181035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Increase in Lassa Fever Cases in Nigeria, January–March 2018

    Ilori, Elsie A. / Frank, Christina / Dan-Nwafor, Chioma C. / Ipadeola, Oladipupo / Krings, Amrei / Ukponu, Winifred / Womi-Eteng, Oboma E. / Adeyemo, Ayodele / Mutbam, Samuel K. / Musa, Emmanuel O. / Lasuba, Clement L. P. / Alemu, Wondimagegnehu / Okogbenin, Sylvanus / Ogbaini, Ephraim / Unigwe, Uche / Ogah, Emeka / Onoh, Robinson / Abejegah, Chukwuyem / Ayodeji, Olufemi /
    Ihekweazu, Chikwe

    2019  

    Abstract: We reviewed data pertaining to the massive wave of Lassa fever cases that occurred in Nigeria in 2018. No new virus strains were detected, but in 2018, the outbreak response was intensified, additional diagnostic support was available, and surveillance ... ...

    Abstract We reviewed data pertaining to the massive wave of Lassa fever cases that occurred in Nigeria in 2018. No new virus strains were detected, but in 2018, the outbreak response was intensified, additional diagnostic support was available, and surveillance sensitivity increased. These factors probably contributed to the high case count.

    Peer Reviewed
    Keywords Ebonyi ; Edo ; Lassa fever ; Lassa virus ; Nigeria ; Ondo ; epidemiology ; hemorrhagic fever ; outbreak ; surveillance ; surveillance capacity ; viruses ; zoonoses ; 610 Medizin und Gesundheit ; ddc:610
    Language English
    Publishing date 2019-02-26
    Publisher Robert Koch-Institut
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Emergence and spread of two SARS-CoV-2 variants of interest in Nigeria.

    Olawoye, Idowu B / Oluniyi, Paul E / Oguzie, Judith U / Uwanibe, Jessica N / Kayode, Tolulope A / Olumade, Testimony J / Ajogbasile, Fehintola V / Parker, Edyth / Eromon, Philomena E / Abechi, Priscilla / Sobajo, Tope A / Ugwu, Chinedu A / George, Uwem E / Ayoade, Femi / Akano, Kazeem / Oyejide, Nicholas E / Nosamiefan, Iguosadolo / Fred-Akintunwa, Iyanuoluwa / Adedotun-Sulaiman, Kemi /
    Brimmo, Farida B / Adegboyega, Babatunde B / Philip, Courage / Adeleke, Richard A / Chukwu, Grace C / Ahmed, Muhammad I / Ope-Ewe, Oludayo O / Otitoola, Shobi G / Ogunsanya, Olusola A / Saibu, Mudasiru F / Sijuwola, Ayotunde E / Ezekiel, Grace O / John, Oluwagboadurami G / Akin-John, Julie O / Akinlo, Oluwasemilogo O / Fayemi, Olanrewaju O / Ipaye, Testimony O / Nwodo, Deborah C / Omoniyi, Abolade E / Omwanghe, Iyobosa B / Terkuma, Christabel A / Okolie, Johnson / Ayo-Ale, Olubukola / Ikponmwosa, Odia / Benevolence, Ebo / Naregose, Grace O / Patience, Akhilomen E / Blessing, Osiemi / Micheal, Airende / Jacqueline, Agbukor / Aiyepada, John O / Ebhodaghe, Paulson / Racheal, Omiunu / Rita, Esumeh / Rosemary, Giwa E / Solomon, Ehikhametalor / Anieno, Ekanem / Edna, Yerumoh / Chris, Aire O / Donatus, Adomeh I / Ogbaini-Emovon, Ephraim / Tatfeng, Mirabeau Y / Omunakwe, Hannah E / Bob-Manuel, Mienye / Ahmed, Rahaman A / Onwuamah, Chika K / Shaibu, Joseph O / Okwuraiwe, Azuka / Ataga, Anthony E / Bock-Oruma, Andrew / Daramola, Funmi / Yusuf, Ibrahim F / Fajola, Akinwumi / Ntia, Nsikak-Abasi / Ekpo, Julie J / Moses, Anietie E / Moore-Igwe, Beatrice W / Fakayode, Oluwatosin E / Akinola, Monilade / Kida, Ibrahim M / Oderinde, Bamidele S / Wudiri, Zara W / Adeyemi, Oluwapelumi O / Akanbi, Olusola A / Ahumibe, Anthony / Akinpelu, Afolabi / Ayansola, Oyeronke / Babatunde, Olajumoke / Omoare, Adesuyi A / Chukwu, Chimaobi / Mba, Nwando G / Omoruyi, Ewean C / Olisa, Olasunkanmi / Akande, Olatunji K / Nwafor, Ifeanyi E / Ekeh, Matthew A / Ndoma, Erim / Ewah, Richard L / Duruihuoma, Rosemary O / Abu, Augustine / Odeh, Elizabeth / Onyia, Venatius / Ojide, Chiedozie K / Okoro, Sylvanus / Igwe, Daniel / Ogah, Emeka O / Khan, Kamran / Ajayi, Nnennaya A / Ugwu, Collins N / Ukwaja, Kingsley N / Ugwu, Ngozi I / Abejegah, Chukwuyem / Adedosu, Nelson / Ayodeji, Olufemi / Liasu, Ahmed A / Isamotu, Rafiu O / Gadzama, Galadima / Petros, Brittany A / Siddle, Katherine J / Schaffner, Stephen F / Akpede, George / Erameh, Cyril Oshomah / Baba, Marycelin M / Oladiji, Femi / Audu, Rosemary / Ndodo, Nnaemeka / Fowotade, Adeola / Okogbenin, Sylvanus / Okokhere, Peter O / Park, Danny J / Mcannis, Bronwyn L / Adetifa, Ifedayo M / Ihekweazu, Chikwe / Salako, Babatunde L / Tomori, Oyewale / Happi, Anise N / Folarin, Onikepe A / Andersen, Kristian G / Sabeti, Pardis C / Happi, Christian T

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 811

    Abstract: Identifying the dissemination patterns and impacts of a virus of economic or health importance during a pandemic is crucial, as it informs the public on policies for containment in order to reduce the spread of the virus. In this study, we integrated ... ...

    Abstract Identifying the dissemination patterns and impacts of a virus of economic or health importance during a pandemic is crucial, as it informs the public on policies for containment in order to reduce the spread of the virus. In this study, we integrated genomic and travel data to investigate the emergence and spread of the SARS-CoV-2 B.1.1.318 and B.1.525 (Eta) variants of interest in Nigeria and the wider Africa region. By integrating travel data and phylogeographic reconstructions, we find that these two variants that arose during the second wave in Nigeria emerged from within Africa, with the B.1.525 from Nigeria, and then spread to other parts of the world. Data from this study show how regional connectivity of Nigeria drove the spread of these variants of interest to surrounding countries and those connected by air-traffic. Our findings demonstrate the power of genomic analysis when combined with mobility and epidemiological data to identify the drivers of transmission, as bidirectional transmission within and between African nations are grossly underestimated as seen in our import risk index estimates.
    MeSH term(s) Humans ; COVID-19/epidemiology ; Nigeria/epidemiology ; SARS-CoV-2/genetics
    Language English
    Publishing date 2023-02-13
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-36449-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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