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: 11/15/2017 1:42 PM
  • Origin: Brazil (2015)
  • Deaths: 20
  • Cases: 222,562 (581,827 suspected)

Full story: CDC updates Zika testing guidance following decline in disease prevalence

  • MERS

  • Updated: 11/15/2017 1:43 PM
  • Origin: Saudi Arabia (2012)
  • Deaths: 733
  • Cases: 2,102

Full story: MERS-CoV: Waiting for Godot for answers

  • Chikungunya

  • Updated: 11/15/2017 1:44 PM
  • Origin: St. Martin (2013)
  • Deaths: 549
  • Cases: 332,457 (2,185,065 suspected)

Full story: Chikungunya more prevalent in women

  • Cholera

    • Microscopic image of Vibrio cholerae bacteria
  • Updated: 11/15/17 1:41 PM
  • Origin: Yemen
  • Deaths: 2,196
  • Cases: 913,741 suspected

Full story: Yemen cholera outbreak hits 500,000 cases

  • Plague

    • Image of plague bacteria
  • Updated: 11/15/2017 1:46 PM
  • Origin: Madagascar (2017)
  • Deaths: 171
  • Cases: 2,119

Full story: As Madagascar plague outbreak loosens grip, concerns linger

  • Hepatitis A

    • Microscopic image of hepatitis particles
  • Updated: 11/15/2017 1:45 PM
  • Origin: San Diego (2016)
  • Deaths: 21
  • Cases: 644

Full story: California declares state of emergency over hepatitis A outbreak

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