People in protective gear enter a building during an Ebola simulation exercise in Uganda in 2019. 
Uganda Declares Ebola Outbreak After Fatality
Katherine Irving | Sep 20, 2022
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.
3D rendered images of three T cell
T Cells Ward Off Aging with Help from Their Friends
Natalia Mesa | Sep 16, 2022
Immune cells deliver packages of telomeres to T cells, helping them retain their virus-fighting function over time, research suggests.
Ancient Mummies’ Lousy View of the Past
Ancient Mummies’ Lousy View of the Past
Nele Haelterman, PhD
Researchers develop method to study ancient human DNA preserved by head lice.
Histology of mouse lungs using purple and green staining on a white background. Left: a healthy lung. Right: a fibrotic lung.<br><br>
Immunotherapy Treats Fibrosis in Mice
Alejandra Manjarrez | Sep 15, 2022
Researchers report that vaccination against proteins found on profibrotic cells reduced liver and lung fibrosis in laboratory rodents.
A surgical mask next to an open pill bottle that&rsquo;s toppled over, spilling out red capsules meant to represent vitamin D supplements.
Vitamin D Likely Doesn’t Prevent COVID-19, Studies Find
Dan Robitzski | Sep 9, 2022
The results from two large clinical trials don't support the idea that supplements of the vitamin bolster immune defenses against SARS-CoV-2.
Small Changes, Big Consequences
Small Changes, Big Consequences
Niki Spahich, PhD
To understand the mechanisms behind severe COVID-19, researchers identified common COVID-19 genetic risk variants that affect immune cell function.
Bright purple and orange lactobacillus bacteria.
How a Specific Gut Bacterium May Cause Type 1 Diabetes
Dan Robitzski | Aug 25, 2022
A bacterium that produces an insulin-like peptide can give mice type 1 diabetes, and infection with the microbe seems to predict the onset of the disease in humans, a study finds.
Illustration of a red bacteriophage infecting a blue bacterium, with other bacteria in the background.
Prokaryotes Are Capable of Learning to Recognize Phages
Patience Asanga | Aug 17, 2022
Immune defense genes in bacteria and archaea can identify viral proteins, a study finds, revealing similarities between the immune systems of prokaryotic and eukaryotic organisms.
Uncovering Leprosy&rsquo;s Genetic Recipe for Success
Uncovering Leprosy’s Genetic Recipe for Success
Nele Haelterman, PhD
Researchers identify what makes certain people more likely to contract leprosy than others.
An illustration of a pregnant women wearing a mask, surrounded by microbes
How COVID-19 Affects Pregnancy
Amanda Heidt | Aug 16, 2022
Evidence thus far shows that pregnant people infected with SARS-CoV-2 are at higher risk for severe disease and death, as well as complications in their pregnancies.
Artist’s rendition of light blue monkeypox viruses in front of a black background.
FDA To Stretch Monkeypox Vaccine Supply via Intradermal Injection
Shafaq Zia | Aug 12, 2022
The newly authorized intradermal vaccination only requires one-fifth of the usual vaccine dose. This will help stretch out the limited vaccine supply, experts say, but only if healthcare personnel receive sufficient training.
Genetic Predisposition to Vitamin D Deficiency Contributes to Severe COVID-19
Iris Kulbatski, PhD
Ana Teresa Freitas discusses how individual variation in vitamin D synthesis and metabolism influences susceptibility to upper respiratory viruses.
Man in lab coat looking at the camera and smiling
Can Taking a Test Now Tell You if You’ve Already Had COVID-19?
Natalia Mesa | Aug 8, 2022
The Scientist asks Brigham and Women’s Hospital infectious disease specialist Lindsey Baden about testing for prior infections.
Artist&rsquo;s rendition of multiple <em>Neisseria gonorrhoeae</em>, the bacteria that causes gonorrhea, depicted as two spheres stuck together, each covered in tendrils.
Gonorrhea-Blocking Mutation Also Protects Against Alzheimer’s: Study
Holly Barker | Aug 5, 2022
Research traces the evolution of a gene variant that reduces the risk of Alzheimer’s disease, finding that it originally evolved in response to infectious bacteria.
A New Multiplexed SARS-CoV-2 Serological Assay Using Advanced Flow Cytometry
A New Multiplexed SARS-CoV-2 Serological Assay Using Advanced Flow Cytometry
The Scientist Creative Services Team
Julie Lovchik will discuss how advanced flow cytometry instrumentation facilitates multiplex assessment of IgG, IgM, and IgA antibodies against SARS-CoV-2.
illustration of inside of gut with floating bacteria
Finding Could Pave the Way to New, Targeted Antibody Treatments
Natalia Mesa | Jul 8, 2022
IgA antibodies appear to bind to specific species of commensal gut bacteria in mice, according to a study.
An orange-brown pineapple sea cucumber, covered in wart-like growths, rests on the seafloor in front of some coral, with a school of fish swimming overhead.
How the Sea Cucumber Defends Itself . . . From Itself
Natalia Mesa | Jul 1, 2022
The marine animals have evolved a unique molecular pathway enabling them to use toxins to fight off invaders without poisoning themselves in the process.
in love with the shape of you
In Love with the Shape of You: Physical Scaffolding Defines Organoid Patterning
Sejal Davla, PhD
Controlling a growing tissue’s shape achieves deterministic and uniform patterning in intestinal organoids.
A section of a mouse distal colon showing luminal contents with bacteria in magenta, the mucus lining (green) and the epithelial cell barrier of the gut (blue, right).
Mapping the Neighborhoods of the Gut Microbiome
Abby Olena | Jul 1, 2022
Researchers are going beyond fecal samples to understand how the patterns of commensal microbes in the gastrointestinal tract influence development and health.
Photo taken from the perspective of a lab worker in a white coat and purple gloves preparing multiple fecal transplant capsules at a time.
Banking Previous Poos: Could a Transplant of Feces from Your Past Heal You?
Dan Robitzski | Jun 30, 2022
The Scientist spoke with Brigham and Women’s Hospital and Harvard Medical School researchers Scott Weiss and Yang-Yu Liu, who propose that people bank stool samples when they’re young and healthy so that they can be transplanted to rejuvenate the gut microbiome later on.