COVID and SARS News

July 21, 2026

Top Headlines

This Food Compound May Help Vaccines Work Better in Older Adults

July 20, 2026 A naturally occurring compound found in foods such as wheat germ, mushrooms, and aged cheese may help older adults build stronger protection after vaccination. In a small pilot trial, researchers gave spermidine supplements to adults over 65 ...

Common Antidepressant May Ease Long COVID’s Crushing Fatigue

July 18, 2026 A low-cost antidepressant may offer new hope for people struggling with long COVID fatigue. In a randomized clinical trial involving 399 adults, fluvoxamine significantly reduced fatigue and improved quality of life compared with a placebo, making ...

A Hidden Immune Backup System Could Supercharge MRNA Cancer Vaccines

July 9, 2026 Researchers found that mRNA cancer vaccines can recruit an unexpected immune cell to launch powerful tumor-fighting responses, overturning a long-held assumption about how the vaccines work. The discovery could lead to more effective cancer vaccines ...

Johns Hopkins Scientists Develop Nose Spray DNA Vaccine for Tuberculosis

July 4, 2026 A new intranasal DNA vaccine may give the immune system an extra weapon against tuberculosis by targeting bacteria that can hide from antibiotics. In animal studies, it helped clear infections faster, reduced lung inflammation, and prevented relapse ...

One Tiny Mutation May Explain How Bat Viruses Become Human Threats

June 23, 2026 Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a single amino-acid difference affects whether the immune ...

New Fentanyl Vaccine Blocks Deadly Overdoses Before They Start

June 13, 2026 A new experimental vaccine developed by Scripps Research could offer a powerful new way to prevent fentanyl overdoses by stopping the drug before it reaches the brain. Rather than targeting only fentanyl itself, the vaccine trains the immune system ...

AI-designed Universal Coronavirus Vaccine Passes First Human Trial

June 5, 2026 Scientists have successfully tested an AI-designed universal coronavirus vaccine in humans for the first time, finding it to be safe and well tolerated. The vaccine generated immune responses against multiple coronaviruses, including SARS-CoV-2, ...

Why Cancer Spreads More in Middle Age Than in Old Age

May 31, 2026 Melanoma may not become steadily more dangerous with age as scientists once assumed. In a surprising discovery, researchers found that cancer spread was lowest in young mice, surged in middle-aged mice, and then dropped again in very old mice. The ...

Scientists Thought Brain Inflammation Was Driving Long COVID but the Scans Told a Different Story

May 28, 2026 A new brain imaging study has found no evidence of widespread brain inflammation in patients suffering from prolonged symptoms after COVID-19 infection. Instead, the most severe long COVID symptoms ...

Scientists Find Natural Compounds That Hit COVID-19 from Every Angle

May 7, 2026 A little-known tree from Brazil’s Atlantic Forest may hold a surprising weapon against COVID-19. Researchers discovered that compounds called galloylquinic acids, extracted from its leaves, can attack SARS-CoV-2 on multiple fronts—blocking the ...

This Simple 3-amino Acid Trick Boosts MRNA Therapy 20-fold

Apr. 20, 2026 A trio of common amino acids may hold the key to unlocking far more powerful gene therapies. Researchers found that adding them to lipid nanoparticles can boost mRNA delivery up to 20-fold and push CRISPR editing efficiency close to 90%. The trick ...

Hidden Weak Spots in HIV and Ebola Revealed with Breakthrough Nanodisc Technology

Apr. 12, 2026 A new nanodisc-based platform lets scientists study viral proteins in a form that closely mimics real viruses, revealing how antibodies truly recognize them. This approach uncovered hidden ...

Latest Headlines

updated 9:38am EDT

Scientists Find Immune Cell Linked to Long COVID Fatigue and Symptoms

Mar. 26, 2026 Long COVID remains a frustrating medical mystery, affecting up to 1 in 10 people long after the initial infection fades. Now, scientists have uncovered a crucial clue hidden deep within the immune ...

This Common Vaccine Cuts Heart Risk Nearly in Half in New Study

Mar. 20, 2026 A shingles vaccine might double as a powerful heart protector. In people already at high risk, it cut major cardiac events by 46% and deaths by an impressive 66% within a year. Scientists think ...

DNA Origami Vaccines Could Be the Next Leap Beyond mRNA

Mar. 17, 2026 mRNA vaccines saved millions of lives during COVID-19 but have limitations like waning immunity and complex production. Scientists are now testing a new platform called DoriVac, which uses folded DNA ...

Scientists Tested Vitamin D for COVID and Found an Unexpected Long COVID Clue

Mar. 15, 2026 A major clinical trial has delivered an unexpected twist in the search for ways to fight COVID-19 and its lingering effects. Researchers at Mass ...

Scientists Create Universal Nasal Spray Vaccine That Protects Against COVID, Flu, and Pneumonia

Feb. 23, 2026 Scientists at Stanford Medicine have unveiled a bold new kind of “universal” vaccine that could one day protect against everything from COVID-19 ...

This Reengineered HPV Vaccine Trains T Cells to Hunt Down Cancer

Feb. 18, 2026 Northwestern researchers have shown that when it comes to cancer vaccines, arrangement can be just as important as ingredients. By repositioning a small fragment of an HPV protein on a DNA-based ...

Large Study Finds No Link Between mRNA COVID Vaccine in Pregnancy and Autism

Feb. 15, 2026 Researchers tracked more than 400 toddlers to see whether mRNA COVID-19 vaccination during or just before pregnancy was linked to autism or ...

How COVID and H1N1 Swept Through U.S. Cities in Just Weeks

Feb. 7, 2026 New simulations reveal that both H1N1 and COVID-19 spread across U.S. cities in a matter of weeks, often before officials realized what was happening. Major travel hubs helped drive rapid nationwide ...

New Nasal Vaccine Shows Strong Protection Against H5N1 Bird Flu

Feb. 5, 2026 As bird flu continues to circulate in animals and spill over into humans, researchers are racing to stop it before it adapts to spread widely between people. A new nasal spray vaccine showed strong ...

Why Long COVID Brain Fog Seems So Much Worse in the U.S.

Jan. 28, 2026 A massive international study of more than 3,100 long COVID patients uncovered a striking divide in how brain-related symptoms are reported around the world. In the U.S., the vast majority of ...

Long COVID May Be Fueled by Inflammation and Tiny Clots

Jan. 8, 2026 Long COVID affects an estimated 65 million people worldwide and can damage the brain, heart, blood vessels, and immune system long after infection. Researchers now link symptoms to lingering virus, ...

MIT Scientists Find a Way to Rejuvenate the Immune System as We Age

Dec. 29, 2025 As the immune system weakens with age, scientists have found a way to restore some of its lost strength. By delivering mRNA to the liver, they created a temporary source of immune-boosting signals ...

Stanford Scientists Uncover Why mRNA COVID Vaccines Can Trigger Heart Inflammation

Dec. 27, 2025 Stanford scientists have uncovered how mRNA COVID-19 vaccines can very rarely trigger heart inflammation in young men — and how that risk might be reduced. They found that the vaccines can spark a ...

Researchers Identify Viral Suspects That Could Be Fueling Long COVID

Dec. 14, 2025 Scientists are uncovering a new possibility behind long COVID’s stubborn symptoms: hidden infections that awaken or emerge alongside SARS-CoV-2. Evidence is mounting that viruses like Epstein-Barr ...

Kids’ Anxiety and Depression Dropped Fast After COVID School Reopenings

Dec. 13, 2025 Researchers discovered that children who went back to school during COVID experienced far fewer mental health diagnoses than those who stayed remote. Anxiety, depression, and ADHD all declined as ...

A Routine Shingles Shot May Offer Powerful Defense Against Dementia

Dec. 3, 2025 A unique vaccine rollout in Wales gave researchers an accidental natural experiment that revealed a striking reduction in dementia among seniors who received the shingles vaccine. The protective ...

Strange Microscopic Structures Found in Long COVID Blood

Nov. 12, 2025 Scientists have discovered strange microscopic structures in the blood of people with Long COVID—clusters of tiny microclots tangled together with sticky immune webs known as neutrophil ...

COVID Vaccine Linked to Fewer Infections and Allergies in Kids With Eczema

Nov. 8, 2025 New research suggests the COVID-19 vaccine could help children with eczema stay healthier overall. Vaccinated kids had lower rates of infections and allergies, including asthma and rhinitis, compared ...

Scientists Discover COVID mRNA Vaccines Boost Cancer Survival

Oct. 28, 2025 Researchers found that COVID-19 mRNA vaccines significantly increased survival in lung and skin cancer patients undergoing immunotherapy. The vaccine appears to prime the immune system in a powerful, ...

Cancer Patients Who Got a COVID Vaccine Lived Much Longer

Oct. 19, 2025 A groundbreaking study reveals that cancer patients who received a COVID-19 mRNA vaccine within 100 days of starting immunotherapy lived dramatically longer than those who didn’t. Researchers from ...

Scientists Finally Reveal What’s Behind Long COVID’s Mysterious Brain Fog

Oct. 6, 2025 Researchers in Japan have pinpointed a biological cause of Long COVID brain fog using advanced PET brain imaging. They discovered widespread increases in AMPA receptor density linked to cognitive ...

Millions Could Be Living With Hidden Smell Loss After COVID Without Knowing

Oct. 2, 2025 A massive NIH-backed study reveals that COVID-19’s toll on smell may be more widespread and lasting than most realize. Even patients without noticeable symptoms often performed poorly on scent ...

Common Allergy Spray Slashes COVID-19 Risk in Surprising Trial

Sep. 7, 2025 A common hay fever nasal spray was found to cut COVID-19 infections by two-thirds in a clinical trial, while also reducing rhinovirus cases. Researchers believe it could serve as an easy, low-cost ...

Ancient DNA Finally Solves the Mystery of the World’s First Pandemic

Aug. 30, 2025 Scientists have finally uncovered direct genetic evidence of Yersinia pestis — the bacterium behind the Plague of Justinian — in a mass grave in Jerash, Jordan. This long-sought discovery ...

The Common Cold’s Unexpected Superpower Against COVID

Aug. 26, 2025 A nationwide study found that recent colds caused by rhinoviruses can give short-term protection against COVID-19. Children benefit most, as their immune systems react strongly with antiviral ...

Even Mild Covid May Leave Blood Vessels Five Years Older

Aug. 18, 2025 Researchers discovered that Covid accelerates blood vessel aging by about five years, especially in women. Even mild infections increased arterial stiffness, with vaccinated individuals showing less ...

Scientists Detect Virus Traces in Blood That May Unlock Long COVID’s Mystery

Aug. 12, 2025 Scientists have found protein fragments from the COVID-19 virus hidden inside tiny cellular packages in the blood of long COVID patients, offering the first potential measurable biomarker for the ...

Researchers Discover Key Social Factors That Triple Long COVID Risk

Aug. 4, 2025 New research led by Mass General Brigham reveals that people facing social challenges—like food insecurity, financial strain, and limited healthcare access—are two to three times more likely to ...

This Vaccine Uses Dental Floss Instead of Needles

Aug. 3, 2025 Scientists have discovered that flossing between your teeth could one day help vaccinate you. By targeting a uniquely permeable gum tissue called the junctional epithelium, this new method stimulates ...

COVID Vaccines Saved 2. 5M Lives Globally—a Death Averted Per 5,400 Shots

July 27, 2025 Between 2020 and 2024, COVID-19 vaccines saved 2.5 million lives globally, preventing one death for every 5,400 doses. A groundbreaking worldwide study led by researchers from Università Cattolica ...