People in protective gear enter a building during an Ebola simulation exercise in Uganda in 2019.
Uganda Declares Ebola Outbreak After Fatality
The outbreak of the Sudan strain of ebolavirus, which includes eight other suspected cases, is the first to hit Uganda in more than a decade.
Uganda Declares Ebola Outbreak After Fatality
Uganda Declares Ebola Outbreak After Fatality

The outbreak of the Sudan strain of ebolavirus, which includes eight other suspected cases, is the first to hit Uganda in more than a decade.

The outbreak of the Sudan strain of ebolavirus, which includes eight other suspected cases, is the first to hit Uganda in more than a decade.

World Health Organization
map showing Tanzania
Unidentified Bleeding Disease Kills Three in Tanzania
Andy Carstens | Jul 15, 2022
Thirteen people with the illness have tested negative for Ebola and Marburg. The Tanzanian government continues to investigate the source.
Egyptian fruit bat hanging from branch
Marburg Virus Detected in Ghana for First Time
Andy Carstens | Jul 8, 2022
Preliminary testing indicates that the two people died from the Ebola-like virus, the World Health Organization says.
animation showing how proximity affects viral transmission
Monkeypox Likely Spread Undetected in US Before Recent Reports  
Andy Carstens | Jun 6, 2022
Two strains of monkeypox have been detected in the US, suggesting the virus has been circulating in the country for some time, the CDC says.
A transmission electron microscopic image of a tissue section containing variola virus particles, the pathogen responsible for causing smallpox in humans
Opinion: Destroy All Samples of the Smallpox Virus
Gigi Gronvall and Tara Kirk Sell | Jun 1, 2022
With a global alarm ringing because of an unprecedented outbreak of monkeypox, we should also consider a different but closely related viral threat.
Child with head tilted back receiving oral polio vaccine
Mass Polio Vaccination Effort Underway in East Africa
Natalia Mesa | Mar 18, 2022
Malawi and its neighbors plan to vaccinate 9.4 million children against polio in the coming week to combat a suspected outbreak.
old-fashioned, black and white alarm clock with words "the end"
Editorial: When Will This Pandemic Officially End?
Bob Grant | Mar 11, 2022
And does it even matter?
smiling woman against a backdrop of bookshelves
WHO Scientist Mwele Malecela Dies at 59
Pradip Chatterjee | Mar 4, 2022
Her achievements included developing a roadmap to tackle neglected tropical diseases.
images related to COVID-19 pandemic, including sign reading "please keep your distance," illustration of the virus, various pills, vaccine syringes
What We Learned About COVID-19 in 2021
Shawna Williams | Dec 16, 2021
As Omicron induces a sense of deja vu at the close of the year, we look back at a few key ways in which our understanding has moved forward.
plasma bags hospital
WHO Rejects Convalescent Plasma Treatment for COVID-19
Chloe Tenn | Dec 6, 2021
Current evidence suggests the treatment does not improve survival or reduce the need for ventilation in COVID-19 patients, the World Health Organization says.
close-up of a mosquito on human skin
Hope, Concern Surround WHO Green Light of First Malaria Vaccine
Katarina Zimmer | Oct 28, 2021
RTS,S has several flaws but could still save tens of thousands of lives, experts say.
Colored 3D rendered image SEM view of Ebola virus
New Ebola Case Confirmed in DRC Months After Previous Outbreak
Chloe Tenn | Oct 11, 2021
Ebola virus was detected in samples from a child who died last week, the World Health Organization and Democratic Republic of the Congo’s Ministry of Health announce.
a pill bottle with dice spilling out
Book Excerpt from You Bet Your Life
Paul A. Offit | Sep 21, 2021
In his book’s Introduction, physician-scientist Paul A. Offit reviews the unusual constellation of circumstances around the development of COVID-19 vaccines.
photo of Abidjan skyline, which includes skyscrapers near a shoreline and white clouds against a blue sky
Ivory Coast Confirms First Ebola Case Since 1994
Annie Melchor | Aug 16, 2021
Officials say it’s not yet clear whether this case is linked to an outbreak in Guinea earlier this summer.
part of West Africa as shown on a desk globe
Marburg Virus Disease Detected in West Africa for First Time
Shawna Williams | Aug 10, 2021
The finding of the Ebola-like disease, which killed a man in Guinea, has prompted public health measures.
Updated
COVID-19 vaccine vials on a map of the world indicating inequitable distribution
Wealthier Nations Disregarding WHO Call for COVID-19 Booster Moratorium
Christie Wilcox | Aug 5, 2021
The organization implored nations to wait on booster shots until the global vaccination rate increases, but several of the world’s more well-off countries have expressed their intentions to offer them regardless.
cartoon showing a hand taking a tool to a double-helix of DNA to represent gene editing
WHO Releases New Recommendations on Human Genome Editing
Annie Melchor | Jul 12, 2021
The guidance comes after two years of consulting with hundreds of stakeholders, including indigenous peoples, religious leaders, patient groups, and scientists.
gloved hand holding test tube of blood with a label marking the sample as positive for malaria. There are tubes with lids of various colors in the background.
China Is Malaria-Free, Says World Health Organization
Annie Melchor | Jun 30, 2021
The certification, a major accomplishment for the world’s most populous nation, may serve as an example to other countries struggling with malaria eradication.
the World Health Organization headquarters building
BioHub Network Aims to Advance Sharing of Pathogens for Research
Shawna Williams | Jun 6, 2021
The World Health Organization–led program will promote equity in addition to facilitating access to samples, a WHO official involved in the project tells The Scientist.
Illustration of a coronavirus
COVID-19’s Origins Need Further Investigation, Say Scientists
Catherine Offord | May 14, 2021
A letter signed by 18 researchers argues that hypotheses about zoonotic spillover or accidental lab release both “remain viable” in the absence of additional evidence.