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For: Msemo OA, Pérez-Alós L, Minja DT, Hansen CB, Gesase S, Mtove G, Mbwana J, Larsen VML, Bøgestad ECS, Grunnet LG, Christensen DL, Bygbjerg IC, Burgner D, Schmiegelow C, Garred P, Hjort L. High anti-SARS-CoV-2 seroprevalence among unvaccinated mother-child pairs from a rural setting in north-eastern Tanzania during the second wave of COVID-19. IJID Reg 2023;6:48-57. [PMID: 36466214 PMCID: PMC9709504 DOI: 10.1016/j.ijregi.2022.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]

For:	Msemo OA, Pérez-Alós L, Minja DT, Hansen CB, Gesase S, Mtove G, Mbwana J, Larsen VML, Bøgestad ECS, Grunnet LG, Christensen DL, Bygbjerg IC, Burgner D, Schmiegelow C, Garred P, Hjort L. High anti-SARS-CoV-2 seroprevalence among unvaccinated mother-child pairs from a rural setting in north-eastern Tanzania during the second wave of COVID-19. IJID Reg 2023;6:48-57. [PMID: 36466214 PMCID: PMC9709504 DOI: 10.1016/j.ijregi.2022.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]

Number

Cited by Other Article(s)

Eriksen CB, Minja DT, Christensen DL, Bygbjerg IC, Damm P, Schmiegelow C, Grunnet LG, Hjort L. Do WHO criteria for gestational diabetes fit a rural population in Tanzania? - A follow-up study assessing mother and child health six years after a pregnancy diagnosed with gestational diabetes. Diabetes Res Clin Pract 2024;211:111657. [PMID: 38583780 DOI: 10.1016/j.diabres.2024.111657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/23/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]

Affiliation(s)

Camilla Byskou Eriksen Center for Pregnant Women with Diabetes, Department of Obstetrics, Copenhagen University Hospital - Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
Daniel Thomas Minja National Institute for Medical Research, Tanga Centre, P.O. Box 5004, Tanga, Tanzania.
Dirk Lund Christensen Global Health Section, Department of Public Health, University of Copenhagen, Oester Farimagsgade 5, 1353 Copenhagen, Denmark.
Ib Christian Bygbjerg Global Health Section, Department of Public Health, University of Copenhagen, Oester Farimagsgade 5, 1353 Copenhagen, Denmark.
Peter Damm Center for Pregnant Women with Diabetes, Department of Obstetrics, Copenhagen University Hospital - Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark.
Christentze Schmiegelow Centre for Translational Medicine and Parasitology, Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark; Department of Infectious Diseases, Copenhagen University Hospital, Blegdamsvej 9, 2100 Copenhagen, Denmark; Department of Gynecology and Obstetrics, Copenhagen University Hospital - North Zealand, Dyrehavevej 29, 3400 Hilleroed, Denmark.
Louise Groth Grunnet Global Health Section, Department of Public Health, University of Copenhagen, Oester Farimagsgade 5, 1353 Copenhagen, Denmark; Clinical and Translational Research, Steno Diabetes Center Copenhagen, Borgmester Ib Juuls Vej 83, 2730 Herlev, Denmark.
Line Hjort Center for Pregnant Women with Diabetes, Department of Obstetrics, Copenhagen University Hospital - Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark; Novo Nordisk Foundation Center for Basic Metabolic Research, Metabolic Epigenetics Group, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2100 Copenhagen, Denmark.

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Bakari M, Aboud S, Kasubi M, Mmbando BP, Ntinginya NE, Sichalwe A, Ubuguyu OS, Magesa A, Rutananukwa NL, Nyawale H, Kisinda A, Beyanga M, Horumpende PG, Mhame PS, Vumilia LM, Mziray LS, Mkala R, Shao E, Makubi A, Mshana SE, Kishimba R. Humoral Immune Responses following COVID-19 Vaccinations among Adults in Tanzania. Vaccines (Basel) 2023;12:22. [PMID: 38250835 PMCID: PMC10819524 DOI: 10.3390/vaccines12010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/07/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024] Open

Abstract

COVID-19 vaccination remains to be the most important intervention in the fight against the pandemic. The immunity among the vaccinated population and its durability can significantly vary due to various factors. This study investigated the humoral immune responses among individuals who received any of the COVID-19 vaccines approved for use in Tanzania. A total of 1048 randomly selected adults who received COVID-19 vaccines at different time points were enrolled and humoral immune responses (IR) were tested at baseline and three months later (960, 91.6%). The level of SARS-CoV-2 anti-spike/receptor binding domain (RBD) IgG, anti-nucleocapsid IgG, and IgM antibodies were determined using a commercially available chemiluminescent microparticle immunoassay. Descriptive data analysis was performed using STATA version 18 and R. At baseline, serum IgG against anti-spike/RBD was detected in 1010/1048 (96.4%) participants (95%CI: 94.9-97.5) and 98.3% (95%CI: 97.3-99) three months later. The IgG against the SARS-CoV-2 nucleocapsid proteins were detected in 40.8% and 45.3% of participants at baseline and follow-up, respectively. The proportion of seroconverters following vaccination and mean titers of anti-spike/RBD antibodies were significantly more among those who had past SARS-CoV-2 infection than in those with no evidence of past infection, (p < 0.001). Only 0.5% of those who had detectable anti-spike/RBD antibodies at baseline were negative after three months of follow-up and 1.5% had breakthrough infections. The majority of participants (99.5%) had detectable anti-spike/RBD antibodies beyond 6 months post-vaccination. The proportion of Tanzanians who mounted humoral IR following COVID-19 vaccination was very high. Seroconversions, as well as the mean titers and durability of humoral IR, were significantly enhanced by exposure to natural SARS-CoV-2 infection. In view of the limited availability of COVID-19 vaccines as well as challenges to completing subsequent doses, booster doses could only be suggested to high-risk groups.

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Affiliation(s)

Muhammad Bakari School of Medicine, Muhimbili University of Health and Allied Sciences (MUHAS), Dar es Salaam P.O. Box 65001, Tanzania; (M.B.); (S.A.)
Said Aboud School of Medicine, Muhimbili University of Health and Allied Sciences (MUHAS), Dar es Salaam P.O. Box 65001, Tanzania; (M.B.); (S.A.) National Institute for Medical Research (NIMR), Dar es Salaam P.O. Box 9653, Tanzania; (B.P.M.); (N.E.N.); (N.L.R.); (A.K.)
Mabula Kasubi Muhimbili National Hospital (MNH), Dar es Salaam P.O. Box 65000, Tanzania;
Bruno P. Mmbando National Institute for Medical Research (NIMR), Dar es Salaam P.O. Box 9653, Tanzania; (B.P.M.); (N.E.N.); (N.L.R.); (A.K.)
Nyanda Elias Ntinginya National Institute for Medical Research (NIMR), Dar es Salaam P.O. Box 9653, Tanzania; (B.P.M.); (N.E.N.); (N.L.R.); (A.K.)
Aifello Sichalwe Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Omary S. Ubuguyu Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Alex Magesa Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Nancy Ladislaus Rutananukwa National Institute for Medical Research (NIMR), Dar es Salaam P.O. Box 9653, Tanzania; (B.P.M.); (N.E.N.); (N.L.R.); (A.K.)
Helmut Nyawale Department of Microbiology and Immunology, Weill Bugando School of Medicine, Catholic University of Health and Allied Sciences (CUHAS), Mwanza P.O. Box 1464, Tanzania;
Abisai Kisinda National Institute for Medical Research (NIMR), Dar es Salaam P.O. Box 9653, Tanzania; (B.P.M.); (N.E.N.); (N.L.R.); (A.K.)
Medard Beyanga Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Pius G. Horumpende Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Paulo S. Mhame Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Liggle M. Vumilia Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Lucy S. Mziray Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)
Reuben Mkala Benjamin Mkapa Hospital (BMH), Dodoma P.O. Box 11088, Tanzania;
Elichilia Shao Kilimanjaro Christian Medical Centre (KCMC), Moshi P.O. Box 3010, Tanzania; Faculty of Medicine, Department of Internal Medicine, Kilimanjaro Christian Medical University College (KCMUCo), Moshi P.O. Box 2240, Tanzania
Abel Makubi Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.) Muhimbili Orthopaedics Institute (MOI), Dar es Salaam P.O. Box 65474, Tanzania
Stephen E. Mshana Department of Microbiology and Immunology, Weill Bugando School of Medicine, Catholic University of Health and Allied Sciences (CUHAS), Mwanza P.O. Box 1464, Tanzania;
Rogath Kishimba Ministry of Health (MoH), Dodoma P.O. Box 743, Tanzania; (A.S.); (O.S.U.); (A.M.); (M.B.); (P.G.H.); (P.S.M.); (L.M.V.); (L.S.M.); (A.M.); (R.K.)

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