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Disease

Koala conservation is a complex balancing act in Australia. In some regions, populations are in steep decline, but in others, the animals are overabundant.

Koalas Are at Risk of Extinction in Some Parts of Australia. Can Freezing Their Sperm and Eggs Help Save the Iconic Marsupials?

Scientists are preserving the animals’ reproductive cells in liquid nitrogen in a bid to boost genetic diversity in future populations

Aging populations are a major driver of the predicted increase in cancer incidents.

Cancer Cases Are Expected to Nearly Double by 2050, Warns the WHO. Low-Income Countries Will Be Disproportionately Affected

In a new report, the World Health Organization predicts that new annual diagnoses will rise from about 20.6 million today to almost 35 million by 2050. The biggest increases will be in Africa and the Eastern Mediterranean region

Public health experts recommend vigorously washing all produce, among other measures.

Cases of a Parasitic Infection That Can Cause Diarrhea for Weeks Are Rapidly Rising in the U.S. Here’s What to Know

The illness is caused by the microscopic parasite Cyclospora cayetanensis, which spreads via food or water contaminated with feces, usually on farms. Health officials are still investigating the source of the multistate outbreak

Artist E. Le Bihan created this depiction of the First Fleet entering Sydney Harbor.

Smallpox Scabs That British Doctors Used to Inoculate Patients May Have Introduced the Deadly Disease to Australia, New Research Suggests

Two new studies find that British colonists arriving via ship in the late 18th century likely introduced smallpox, which devastated Aboriginal communities far more than previously known

Francesco I de' Medici, left, died suddenly in 1587. His brother Ferdinando I, right, succeeded him as grand duke of Tuscany.

Did This Duke Poison His Brother? A New DNA Analysis May Solve the Centuries-Old Medici Mystery

Researchers found evidence of malaria in Francesco I de’ Medici’s bones, leading them to argue “with scientific certainty” that it was disease, not arsenic, that led to his death in 1587

The researchers say the early strains of plague they identified were highly lethal.

New Research

New Discovery That Hunter-Gatherer Children Died of Plague More Than Five Millennia Ago Sets Back the Date of the Earliest Outbreak

The skeletons of nomadic families unearthed in Siberia harbor “Yersinia pestis” bacteria, which challenges theories about conditions needed for the disease to spread

About two-thirds of patients ages 40 and older with a common form of breast cancer might be able to forego chemotherapy—usually delivered intravenously—as part of their treatment plans.

This ‘Practice-Changing’ Gene Test Could Tell Doctors Which Patients With Breast Cancer Can Skip Chemo, Clinical Trial Suggests

Chemotherapy comes with debilitating side effects, including brain fog, nausea and nerve damage. New research suggests that many people with a common type of breast cancer need just radiation and hormone therapy to prevent recurrence

An Aedes aegypti mosquito

Google Wants to Release 32 Million Mosquitoes in California and Florida. Here’s Why

The company is asking the U.S. Environmental Protection Agency for permission to release millions of sterilized mosquitoes in order to fight their disease-spreading counterparts

Two members of the Médecins Sans Frontières Ebola response team outside a hospital in the Democratic Republic of Congo

These Experimental Ebola Treatments and Vaccines Might Help Slow the Outbreak Spreading in Congo and Uganda, WHO Says

No approved therapeutics exist for the virus species causing the outbreak, which has been associated with more than 1,000 cases of Ebola. The World Health Organization has identified several therapeutics to test in clinical trials in the coming months

A mosquito drinking blood from a bag, accessible through mesh

Could Bug Spray Attract Mosquitoes? Lab Insects Learned That the Smell of DEET Would Lead Them to a Tasty Treat

Researchers don’t know how the findings might overlap with real-world settings. But the discovery suggests that we’re most vulnerable when our insect repellent is wearing off, meaning we should reapply it regularly

The drug ensitrelvir, under the brand name Xocova, was recently approved in Japan as a post-exposure protection against Covid-19.

This Pill Can Prevent You From Getting Covid-19 After Exposure to the Disease-Causing Virus, According to a Clinical Trial

The drug showed promising results in an international study involving nearly 2,400 participants, and the U.S. Food and Drug Administration is expected to make an approval decision for it in June

A visitor washes his hands before entering a hospital in the Democratic Republic of Congo as part of Ebola prevention measures.

The Ebola Outbreak in Africa Was Declared a Global Health Emergency by the WHO. Here’s What to Know About the Rare but Severe Illness

The international health agency notes that the outbreak does not meet the criteria for a pandemic, and the U.S. Centers for Disease Control and Prevention says that the risk to the American public is low

The MV Hondius, the cruise ship facing a hantavirus outbreak, anchored off the coast of Cape Verde, an archipelagic country near West Africa

A Deadly Outbreak of Hantavirus Has Stranded a Cruise Ship in the Atlantic Ocean. Here’s What to Know About the Rare Contagion

Three people associated with the vessel have died, and health officials have identified a total of two confirmed cases and five suspected cases of the infection. The virus usually spreads via contaminated rodent droppings

An illustration of lymphocytes, or white blood cells in the immune system, which include T cells and other disease-fighting cells

You’ve Been Told to ‘Feed a Cold.’ Turns Out, Eating May Truly Boost Your Immune System Cells, According to a New Study

T cells, which target infection and disease, can become more effective after a meal. The finding might help improve cancer-fighting therapies and optimize our response to vaccines

A tooth from the Jerash mass grave site

New Research

Dead Bodies Filled a Mass Grave When the First Plague Pandemic Struck This Early Medieval City. New Research Explores the Identity of the Victims

Researchers analyzed isotopes and DNA in the teeth of remains found in a mass grave from the Plague of Justinian, which swept through the Byzantine Empire

Some cancer patients ring a bell to signal the end of their treatment and their return to normal life. But many would benefit from specialized long-term medical care to manage the ongoing effects of the disease and its treatments.

Cancer Survivors Are Living Longer but Still Have Complex Needs. That’s Why Doctors and Advocates Want Post-Treatment Care Plans

Survivors have a heightened risk of developing cardiovascular disease, pain, insomnia, psychosocial distress and new cancers. Many, patient advocates say, are not receiving adequate long-term care

The McDougall Creek wildfire burns in the hills of British Columbia, Canada, on August 17, 2023. Evacuation orders were put in place for areas near Kelowna, as the fire threatened the city of around 150,000.

Ancient Humans Mastered Fire. Now, Burning Fossil Fuels and Blazing Landscapes Threaten to ‘Undo the World’

Intensifying wildfires across the continent are spewing air pollution, putting human health at risk, particularly Americans living with chronic illnesses

An artificially colored human B cell, the type of immune cell that caused all three autoimmune diseases in the patient

In a First, This Personalized Cell Therapy Treated Three Life-Threatening Autoimmune Diseases in One Patient

The patient was bedridden and needed daily blood transfusions, and she had tried nine different therapies that didn’t bring lasting effects. So, researchers modified some of her immune cells so they would attack her faulty cells

Now part of Dry Tortugas National Park, Fort Jefferson was built starting in 1846.

This Soldier Died of Yellow Fever During a Hurricane 153 Years Ago. Archaeologists Just Found His Grave

George Tupper, a 22-year-old from Massachusetts, was nearly a year into his military service when a yellow fever outbreak struck Fort Jefferson

The new variant has been detected in 25 states so far.

The ‘Cicada’ Variant of Covid-19 Is Spreading in the United States. Here’s What You Need to Know

Infection levels are still low in the country, but the highly mutated variant might be able to evade your body’s immune defenses acquired via vaccine or past infection

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