Mutant virus and stem cell eye treatment: full episode of Razor


While many hoped the COVID-19 pandemic was over, scientists were more surprised that the Delta variant was not overtaken by another variant.

Sadly that has now happened and Emma Keeling talks to virologist Jeremy Rossman about how we should be worried about the Omicron variant and also takes a look at Japan where cases have dropped dramatically from their peak after the Tokyo Summer Olympics.

Could a Japanese scientist’s theory be correct that the virus mutated so much that it drove a strain to extinction?


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Age-related macular degeneration, or AMD, is an eye condition that affects millions of people worldwide.

In the UK it is the leading cause of vision loss. At King’s College London and Moorfields Eye Hospital, scientists are developing a new treatment that could help people see again by implanting stem cell patches in their retinas.

One trial has already been successfully tested on two patients, both of whom went from not being able to read at all, even with glasses, to reading 60 to 80 words per minute with normal reading glasses.

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