One of the most difficult challenges with COVID-19 is constant viral evolution. As the virus mutates and infects animals, tracking its changes becomes harder. Current vaccines remain the strongest defense against severe COVID-19 disease. Still, improved vaccine technologies are urgently needed as variants continue emerging.

Researchers recently tested a single-dose intranasal COVID-19 vaccine in animals. They found it effectively prevented coronavirus infection and blocked viral transmission. The research team comes from the University of Hong Kong’s LKS Faculty of Medicine. Their work focuses on preventing future coronavirus outbreaks before they spread.

This new vaccine functions like a Swiss Army knife against coronaviruses. Most existing vaccines primarily protect against one dominant viral strain. This prototype offers broad protection and requires only a single dose.

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Researchers have identified powerful immune defenders operating inside the human gut. These defenders act like a football team’s defensive linebackers. They block harmful microbes and chase invaders that breach defenses.

One key defender is a gut protein called intelectin-2. Intelectin-2 reinforces mucus walls and captures invading bacteria. Together, these actions stop infections before they spread deeper.

Intelectin-2 is not working alone inside the mucus layer. Mucus contains many immune proteins that block dangerous microbes. These proteins prevent infections and limit harmful inflammation.

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Viruses and bacteria have been locked in an ancient war for billions of years. Like human warfare, survival depends on constant adaptation and innovation.

Scientists now have a way to watch this microscopic arms race unfold in space. By moving the battlefield, researchers are gaining new insight into how microbes fight, survive, and evolve.

A new study published in PLOS Biology examined bacterial and viral evolution aboard the International Space Station. Researchers focused on Escherichia coli and a virus known as the T7 bacteriophage. Phages are viruses that infect bacteria, hijacking their machinery to reproduce. Phage therapy is already being explored as a way to kill antibiotic-resistant bacteria.

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Auto-Brewery Syndrome sounds fictional, but it is a real medical condition. The rare illness causes people to feel drunk after eating normal foods. This intoxication can happen even when no alcohol is consumed.

The disease, often shortened to ABS, remains poorly understood. Many people live with symptoms for years without diagnosis or treatment. Overall awareness among clinicians and the public remains very limited.

A new study reinforced and expanded previous findings on ABS. Researchers analyzed stool samples from 22 people with confirmed ABS. They compared results with symptom-free household partners.

The study found excessive ethanol production in affected individuals’ stool. Two bacteria appeared consistently across ABS samples, Klebsiella pneumoniae and Escherichia coli.

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Sometimes it is easy to refer to “the pandemic” as something that already ended. The phrase alone can make COVID-19 seem historical. While the World Health Organization ended COVID-19’s designation as a global health emergency in 2023, the disease itself has not stopped exacting a heavy toll.

A recent study published in JAMA Internal Medicine examined COVID-19 illnesses, hospitalizations, and deaths in the United States from late 2022 through late 2024. The findings make clear that COVID-19 continues to impose a significant health burden year after year.

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