Definition of undulant fever in English:

undulant fever

noun

mass noun
  • Brucellosis in humans.

    • ‘It can also bring about undulant fever in humans.’
    • ‘It can also be passed to humans, causing a chronic ailment known as undulant fever.’
    • ‘This provision is extended to enteric fever, dysentery, diphtheria, scarlet fever, acute inflammation of the throat, gastroenteritis, and undulant fever.’
    • ‘Thus undulant fever, a particularly debilitating illness that often led to rheumatism, became known as Malta fever - to which many Maltese objected.’
    • ‘For example bacteria in unpasteurized milk have been known to infect those who drink it with polio, tuberculosis, typhoid, diphtheria, undulant fever, and foot and mouth disease.’

Origin

Late 19th century: so named because of the intermittent fever associated with the disease.