The UN health agency said a total of 4,985 people had been infected across five west African countries, and that 2,461 had died.
In the three hardest-hit countries of Guinea, Libera and Sierra Leone, nearly half of the cases were recorded in the past three weeks, WHO said.
In Guinea, where the outbreak began at the start of the year, Ebola had as of September 13 claimed 595 lives, or 64 per cent of the 936 people infected.
In Liberia, which has been hardest-hit by the outbreak, 1,296 people had died from Ebola as of September 9, representing 54 per cent of the 2,407 people infected.
A full 57 per cent, or 1,383, of those cases were recorded during the three weeks before September 9.
In Sierra Leone, 562 people had died from Ebola by September 13, accounting for 35 per cent of the 1,620 people infected.
Forty per cent of those cases were recorded during the preceding 21 days.
Nigeria had meanwhile, as of September 13, seen eight Ebola deaths since the virus first arrived in the country with a Liberian finance ministry official who died in Lagos on July 25.
Senegal's only confirmed Ebola case -- a Guinean student who crossed the border just before it was closed on August 21 -- has recovered, but the country will not be declared transmission free before 42 days have passed since the case was recorded.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
