In 2017, four countries in the Region of the
Americas—
Brazil, the
Dominican Republic,
Haiti, and the Bolivarian Republic of
Venezuela—reported confirmed
diphtheria cases. In 2018 as of epidemiological week (EW) 14 of 2018, four countries in the Region—
Brazil,
Colombia,
Haiti, and
Venezuela—have reported suspected and confirmed
diphtheria cases.