Gaurav Kwatra, PhD, MPH

Sero-epidemiology of measles immunoglobulin G antibodies among newborns from South-East Asia and sub-Saharan Africa: an observational, multicenter study. Bokop, C; Dhar, N; Izu, A; Ali, MM; Akaba, G; Barsosio, HC; Berkley, JA; Beck, MM; Chaka, TE; Cutland, CL; Tapia, MD; Veeraraghavan, B; Madhi, SA; Kwatra, G. International Journal of Infectious Diseases. 2025; 154:107882.

Association of serum anti-gbs2106 protein immunoglobulin G (IgG) in newborns and risk reduction of invasive group B streptococcus disease during early infancy. Gent, V; Dhar, N; Izu, A; Jones, S; Dangor, Z; Briner, C; Hosken, N; Kwatra, G; Madhi, SA. Vaccine. 2025; 54:127016.

Prenatal SARS-CoV-2 Infection Alters Human Milk-Derived Extracellular Vesicles. Chutipongtanate, S; Kongsomros, S; Cetinkaya, H; Zhang, X; Kuhnell, D; Benefield, D; Haffey, WD; Wyder, MA; Kwatra, G; Conrey, SC; Newburg, DS; Greis, KD; Staat, MA; Morrow, AL. Cells. 2025; 14:284.

Interlaboratory comparison of a multiplex immunoassay that measures human serum IgG antibodies against six-group B streptococcus polysaccharides. Le Doare, K; Gaylord, MA; Anderson, AS; Andrews, N; Baker, CJ; Bolcen, S; Felek, A; Giardina, PC; Grube, CD; Hall, T; Tan, CY; Taylor, S; Kwatra, G; Gorringe, A. Human Vaccines and Immunotherapeutics. 2024; 20:2330138.

T-cell responses to ancestral SARS-CoV-2 and Omicron variant among unvaccinated pregnant and postpartum women living with and without HIV in South Africa. McMahon, WC; Kwatra, G; Izu, A; Jones, SA; Mbele, NJ; Jafta, N; Lala, R; Shalekoff, S; Tiemessen, CT; Madhi, SA; Nunes, MC. Scientific Reports. 2024; 14:20348.

Surface protein distribution in Group B Streptococcus isolates from South Africa and identifying vaccine targets through in silico analysis. Gent, V; Lu, YJ; Lukhele, S; Dhar, N; Dangor, Z; Hosken, N; Malley, R; Madhi, SA; Kwatra, G. Scientific Reports. 2024; 14:22665.

Prevalence of group B Streptococcus colonisation in mother-newborn dyads in low-income and middle-income south Asian and African countries: a prospective, observational study. Kwatra, G; Izu, A; Cutland, C; Akaba, G; Ali, MM; Ahmed, Z; Beck, MM; Barsosio, HC; Berkley, JA; Chaka, TE; Sahni, RD; Tapia, MD; Veeraraghavan, B; Madhi, SA. The Lancet Microbe. 2024; 5:100897.

Vaccine value profile for Klebsiella pneumoniae. Dangor, Z; Benson, N; Berkley, JA; Bielicki, J; Bijsma, MW; Broad, J; Buurman, ET; Cross, A; Duffy, EM; Holt, KE; Srikantiah, P; Tennant, SM; Hasso-Agopsowicz, M; Madhi, SA. Vaccine. 2024; 42:S125-S141.

Distributions of candidate vaccine Targets, virulence Factors, and resistance features of invasive group B Streptococcus using Whole-Genome Sequencing: A Multicenter, population-based surveillance study. Ji, W; Zhou, H; Li, J; Britto, CD; Liu, Z; Zhang, W; Du, J; Madhi, SA; Kwatra, G; Dangor, Z; Jin, Z; Zhao, H; Zhao, Y; Fang, Y; Li, J. Vaccine. 2024; 42:3564-3571.

Post-acute sequelae of SARS-CoV-2 infection in health care workers from South Africa. Mbotwe-Sibanda, S; Kwatra, G; Madhi, SA; Nunes, MC. Oxford Open Immunology. 2024; 5:iqae001.