Gaurav Kwatra, PhD, MPH

Genomic Characterization of Klebsiella pneumoniae Causing Invasive Disease in South African Infants: Observational Studies Between 2018 and 2023. Olwagen, CP; Izu, A; Khan, S; Jones, S; Briner, C; Kwatra, G; Van Der Merwe, L; Dean, NJ; Baillie, VL; Mahtab, S; Donald, RGK; Simon, R; Dangor, Z; Madhi, SA. Open Forum Infectious Diseases. 2026; 13(1):ofag004.

Prevalence and associated factors of methicillin-resistant and vancomycin-susceptible Staphylococcus aureus among clinical isolates at Hawassa university comprehensive specialized hospital, Ethiopia, 2019-2023. Tsige, I; Reda, DY; Kefeni, M; Merid, Y; Negash, AA; Kwatra, G; Balcha, ES; Ali, MM. BMC Infectious Diseases. 2025; 25(1):1388.

Prevalence of hepatitis B virus infection among pregnant women and cord blood hepatitis B surface antigen positive newborns in sub-Saharan Africa and South Asia. Bokop, C; Dhar, N; Izu, A; Thaver-Kleitman, J; Prabdial-Sing, N; Ali, MM; Akaba, G; Barsosio, HC; Berkley, JA; Beck, MM; Tapia, MD; Veeraraghavan, B; Kwatra, G; Madhi, SA. Journal of Clinical Virology. 2025; 179:105826.

Hybrid Immunity in a Mozambican Cohort After 1 or 2 Doses of the BBIBP-CorV Vaccine. Chissumba, RM; Kwatra, G; Ramgi, P; Enosse, M; Sigaúque, A; Khosa, C; Viegas, E; Bule, O; Langa, J; Dhar, N; Richardson, S; Moore, P; Madhi, S; Jani, IV. Clinical Infectious Diseases. 2025; 80(Supplement_1):S57-S65.

T-cell responses induced by SARS-CoV-2 index-virus nanoparticle protein vaccine to the ancestral and omicron variants 6 months following primary vaccination. Mcmahon, WC; Kwatra, G; Nunes, MC; Izu, A; Koen, AL; Greffrath, J; Shalekoff, S; Tiemessen, CT; Shinde, V; Bennett, C; Madhi, SA. Communications Medicine. 2025; 5(1):220.

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.

Genomic relatedness of colonizing and invasive disease Klebsiella pneumoniae isolates in South African infants. Olwagen, CP; Izu, A; Khan, S; Van Der Merwe, L; Dean, NJ; Mabena, FC; Jones, S; Kwatra, G; Andrew, L; Rajyaguru, U; Ramsamy, Y; Velaphi, SC; Dangor, Z; Madhi, SA. Scientific Reports. 2025; 15(1):8043.

Trends of neonatal sepsis and its etiology at Hawassa, Ethiopia: a five year retrospective cross-sectional study. Ali, MM; Kwatra, G; Mengistu, M; Kijineh, B; Hailemeriam, T; Worku, E; Fenta, DA; Lambiyo, T; Reda, DY; Alemayehu, T. BMC Pediatrics. 2025; 25(1):152.

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(4).