Clinical Efficacy of Typhoid Conjugate Vaccine (Vi-TCV) Among Children Age 9 Months Through 12 Years in Blantyre, Malawi

Summary

This study will evaluate the efficacy of a Typhoid conjugate vaccine (Vi-TCV) in Malawi, Africa among children age 9 months through 12 years. Participants will be randomized in a 1:1 ration to receive the study vaccine or the control vaccine (meningococcal group A conjugate vaccine - MCV-A).

Timeline

Start

2018-02-21

Primary completion

2025-01-30

Completion

2027-01-30

Publications

• Patel PD, Liang Y, Meiring JE, Chasweka N, Patel P, Misiri T, Mwakiseghile F, Wachepa R, Banda HC, Shumba F, Kawalazira G, Dube Q, Nampota-Nkomba N, Nyirenda OM, Girmay T, Datta S, Jamka LP, Tracy JK, Laurens MB, Heyderman RS, Neuzil KM, Gordon MA; TyVAC team. Efficacy of typhoid conjugate vaccine: final analysis of a 4-year, phase 3, randomised controlled trial in Malawian children. Lancet. 2024 Feb 3;403(10425):459-468. doi: 10.1016/S0140-6736(23)02031-7. Epub 2024 Jan 25.
• Nampota-Nkomba N, Nyirenda OM, Khonde L, Mapemba V, Mbewe M, Ndaferankhande JM, Msuku H, Masesa C, Misiri T, Mwakiseghile F, Patel PD, Patel P, Johnson-Mayo I, Pasetti MF, Heyderman RS, Tracy JK, Datta S, Liang Y, Neuzil KM, Gordon MA, Laurens MB; Typhoid Vaccine Acceleration Consortium team. Safety and immunogenicity of a typhoid conjugate vaccine among children aged 9 months to 12 years in Malawi: a nested substudy of a double-blind, randomised controlled trial. Lancet Glob Health. 2022 Sep;10(9):e1326-e1335. doi: 10.1016/S2214-109X(22)00275-3.
• Patel PD, Patel P, Liang Y, Meiring JE, Misiri T, Mwakiseghile F, Tracy JK, Masesa C, Msuku H, Banda D, Mbewe M, Henrion M, Adetunji F, Simiyu K, Rotrosen E, Birkhold M, Nampota N, Nyirenda OM, Kotloff K, Gmeiner M, Dube Q, Kawalazira G, Laurens MB, Heyderman RS, Gordon MA, Neuzil KM; TyVAC Malawi Team. Safety and Efficacy of a Typhoid Conjugate Vaccine in Malawian Children. N Engl J Med. 2021 Sep 16;385(12):1104-1115. doi: 10.1056/NEJMoa2035916.
• Meiring JE, Laurens MB, Patel P, Patel P, Misiri T, Simiyu K, Mwakiseghile F, Tracy JK, Masesa C, Liang Y, Henrion M, Rotrosen E, Gmeiner M, Heyderman R, Kotloff K, Gordon MA, Neuzil KM. Typhoid Vaccine Acceleration Consortium Malawi: A Phase III, Randomized, Double-blind, Controlled Trial of the Clinical Efficacy of Typhoid Conjugate Vaccine Among Children in Blantyre, Malawi. Clin Infect Dis. 2019 Mar 7;68(Suppl 2):S50-S58. doi: 10.1093/cid/ciy1103.

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