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New research has uncovered a hidden pathway that allows COVID-19 to infect the immune system and trigger damaging inflammation in the lungs. The study by La Trobe University and WEHI researchers found SARS-CoV-2, the virus that causes COVID-19, can hide inside tiny fragments of d

Variants of sexually transmitted Shigella—a bacterial infection that causes bloody or prolonged diarrhea and can lead to severe dehydration—are causing more disease and becoming increasingly antibiotic-resistant among sections of the U.K.'s LGBTQ+ community, a new Cambridge study

The meningococcal B vaccine is ineffective in gonorrhea prevention among men who have sex with men (MSM) at high risk of infection, according to findings from the world's largest randomized controlled trial (RCT) into possible efficacy published in the New England Journal of Medi

Air pollution from cruise ships could be damaging the health of people living in port cities by increasing inflammation and susceptibility to viruses such as the common cold and COVID-19. New research from the University of Southampton, published in Environment International, stu

Knowing how viruses change in the initial weeks of an infection can provide important information about their adaptability. Researchers from the Departments of Molecular & Medical Virology and Translational & Computational Infection Research at Ruhr University Bochum, Germany, ha

The COVID pandemic feels like a long time ago. Now, we have widespread immunity from vaccination and natural infection. And getting COVID is less risky than it was five years ago.

New research has demonstrated a mechanistic link between the immune response to herpesviruses—the family of viruses related to cold sores, childhood infections and mononucleosis—and an increased risk of Alzheimer's disease. A team of scientists from Cardiff University's School of

Infections from the diarrhea-causing parasite cyclospora are surging, with state-level data suggesting that 2026 is already the nation's worst year for reported cases.

France has confirmed its first Ebola case linked to the outbreak in the Democratic Republic of Congo. The infection comes weeks after European health authorities said there were no active Ebola cases in the EU.

Women who were vaccinated against covid-19 in the luteal phase of their menstrual cycle reported having a breakthrough infection sooner than those vaccinated during their follicular phase

Those who work with animals are at greater risk for infection, but face challenges in accessing healthcareAgricultural workers are among the highest risk group for human infection during the screwworm outbreak in the American south, yet they frequently face challenges in accessin

Readers respond to letters about testing mental capacityRe memory tests (Letters, 1 July), my mother was taken to hospital some years ago after an infection overwhelmed her. She was confused and stressed. A doctor wanted to check her mental capacity and gave her paper and a penci