Outbreak Tracker

Welcome to the Outbreak Tracker, brought to you by Healio.com and Infectious Disease News. Here you'll find the latest data on emerging outbreaks affecting countries worldwide, including case counts, mortality rates and transmission and treatment information. Check back daily to stay informed.



  • Zika (Americas)

    • Credit: CDC
  • Updated: 7/19/2017 4:35 PM
  • Origin: Brazil (2015)
  • Deaths: 20
  • Cases: 214,783 (570,254 suspected)

Full story: Zika’s path to pathogenicity

  • MERS

  • Updated: 7/19/2017 4:36 PM
  • Origin: Saudi Arabia (2012)
  • Deaths: 712
  • Cases: 2,040

Full story: MERS 4 years later: Still much to learn

  • Chikungunya

  • Updated: 7/19/2017 4:37 PM
  • Origin: St. Martin (2013)
  • Deaths: 461
  • Cases: 238,495 (2,185,072 suspected)

Full story: Chikungunya more prevalent in women

  • Cholera

    • Microscopic image of Vibrio cholerae bacteria
  • Updated: 7/19/17 4:34 PM
  • Origin: Yemen
  • Deaths: 1,817
  • Cases: 362,545 suspected

Full story: Suspected cholera cases in war-torn Yemen exceed 200,000

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