Molecularepidemiology and antimicrobial resistance determinants of Corynebacterium diphtheriae causing infections in Karachi, Pakistan, 2023-2024.
Circulation of diverse C. diphtheriae strains with alarming antimicrobial resistance underscores the need for genomic surveillance to evaluate transmission trends and highlights Elek test limitations in detecting toxin production and the need for improved diagnostics in low- and middle-income countries.