What is 'eye stroke' and why has it been linked to weight loss injections?

Eye stroke, or non-arteritic anterior ischemic optic neuropathy (Naion), involves sudden vision loss due to reduced blood flow to the optic nerve. Recent data indicate a rare but increased risk of Naion with the weight-loss injection Wegovy (semaglutide), especially in men. The risk appears higher with injectable forms and higher doses, though the overall incidence remains very low.

Vaccines facing misinformation spike: WHO experts
Vaccine programs are increasingly threatened by misinformation, uncertain research funding, and global conflicts, which undermine public trust and disrupt immunization efforts. Ongoing polio transmission in conflict zones and limited COVID-19 vaccine options highlight the need for sustained investment and improved vaccines. WHO emphasizes that vaccines do not cause autism and remain essential for disease prevention.
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Vaccine programs are being challenged by rising misinformation and an uncertain pipeline for research funding, the World Health Organization's immunization experts say.
And the war in the Middle East will likely hamper the fight against polio, the WHO's Strategic Advisory Group of Experts on Immunization (SAGE) said.

The group held its biannual meeting last week, focusing on COVID-19 jab recommendations, typhoid vaccine dosing schedules and oral polio vaccine doses in routine immunization.

"Emerging challenges for the future include uncertain funding for vaccine research and development, and misinformation and distorted information that erodes public trust in vaccines," said SAGE.

"Protecting trust and countering misinformation will be a central focus in 2026."
Trust in vaccines is being "threatened by misinformation.
Vaccines had saved 154 million lives over the past 50 years, and more than 30 diseases could be prevented through immunization, according to WHO.
The risk is about backsliding, or even countries deciding that they can't afford all of the vaccines that are in their program
Source: News agencies

Space supercharges anti-bacterial viruses

Viruses that infect bacteria, called phages, evolve different strategies to infect their targets on the International Space Station than they do on the ground, which could help create new treatments for antibiotic-resistant infections. Researchers found that the phages took longer to infect E.coli in microgravity, and that the viruses developed microgravity-specific mutations, some of which helped them to better cling onto bacterial receptors. Once they returned to earth, they were able to kill stubborn strains of E.coli responsible for urinary tract infections that tend to be resistant to bacteriophages.

https://journals.plos.org/plosbiology/article?id=10.1371/journal.pb...