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Claudia and guest Professor Matthew Fox from Boston University discuss the latest Covid-19 research this week \\u2013 and there\\u2019s plenty of it! There\\u2019s new data on the variant first found in the UK, plus efficacy data just out comparing the immune responses to the AstraZeneca and Pfizer vaccines. And news from India of a so called \\u2018double mutant\\u2019 where two variants come together. Meanwhile the big vaccine news in the US is that they have temporarily suspended the Johnson and Johnson vaccine, so much to discuss!

Plus, despite an acclaimed vaccine roll out Chile is experiencing a second wave of Covid infections. This has led some to claim that vaccine roll outs aren\\u2019t making the difference we all hoped or that it\\u2019s the type of vaccine being used. Jane Chambers reports and finds that it\\u2019s more complicated \\u2013 as ever!

And David and Barbara got in touch with the BBC about a treatable condition that can be easily confused with dementia - Normal pressure Hydrocephalus.

Finally, a study from Japan on the risk of dementia and \\u2013 surprisingly - whether it has anything to do with whether there are pavements nearby.

Presenter: Claudia Hammond\\nProducer: Erika Wright

(Picture: Health workers give the Sinovac vaccine against Covid-19 at a vaccination centre in Santiago, Chile. Photo credit: Martin Bernetti/AFP/Getty Images.)