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: 9/15/2017 10:26 AM
  • Origin: Brazil (2015)
  • Deaths: 20
  • Cases: 220,842 (580,349 suspected)

Full story: Zika’s path to pathogenicity

  • MERS

  • Updated: 9/15/2017 10:27 AM
  • Origin: Saudi Arabia (2012)
  • Deaths: 722
  • Cases: 2,080

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

  • Chikungunya

  • Updated: 9/15/2017 10:27 AM
  • Origin: St. Martin (2013)
  • Deaths: 534
  • Cases: 323,398 (2,155,141 suspected)

Full story: Chikungunya more prevalent in women

  • Cholera

    • Microscopic image of Vibrio cholerae bacteria
  • Updated: 9/15/17 10:25 AM
  • Origin: Yemen
  • Deaths: 2,074
  • Cases: 663,451 suspected

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

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