Health Check

New evidence on whether mixing Covid vaccines and spreading doses out gives better results.Plus, has five years of food labels in Chile warning of high fat, sugar or salt made a difference to obesity levels? Jane Chambers reports.And what gives some people a sense of entitlement? Emily Zitek, Associate Professor of Organisational Behaviour at Cornell University explains her new research.Claudia's studio guest is James Gallagher, BBC Health and Science Correspondent.Presenter: Claudia Hammond Producer: Erika Wright(Picture: Three vials with different vaccines against Covid-19 by (L-R) Moderna, AstraZeneca and Pfizer-BioNTech. Photo credit: Thomas Kienzle/AFP/ Getty Images.)

As Tanzania joins Covax, Rhoda Odhiambo discusses the challenges ahead and says 'joining' makes it sound simple but the requirements that need to be put in place are far from simple. Also,results from the first national TB prevalence survey in South Africa shows that the disease is found more in men and young people than previously recognised. Claudia talks to professor Martie van der Walt, director of the TB platform of the South African Medical Research Council while Taurai Maduna reports from a TB screening clinic in Diepsloot, Gauteng Province. Plus, professor Catherine Loveday on new research assessing lockdown memories and what they mean.Claudia's studio guest is Matt Fox from Boston University.Presenter: Claudia Hammond Producer: Erika Wright(Photo: Portrait of a young man wearing a face mask in Nungwi, Tanzania. Credit: Jasmin Merdan/Getty Images)

Good news that a new treatment for Covid could help one in three people in hospital. Results are from the Recovery trial in the UK using an infusion of two antibodies made in the laboratory which bind to the virus and stop it replicating. But it is expensive and those people who haven't made their own antibodies should be given the treatment. And Project S - the unique experiment that vaccinated a whole town in Brazil. Claudia speaks to Dr Ricardo Palacios, clinical studies director at the Butantan Institute in Sao Paulo, leading the research. Plus a ground breaking trial in Yogyakarta city, Indonesia, that has cut cases of Dengue Fever by 77% by infecting mosquitoes with a "miraculous" bacteria.Presenter: Claudia Hammond Producer: Erika Wright(Picture: A doctor holds a vial of monoclonal antibodies, a new treatment for Covid-19. Photo credit: Cristian Storto Fotografia/Getty Images.)

Aducanumab the controversial new drug for Alzheimer’s disease, just approved by the FDA in the US is the first approved breakthrough in nearly 20 years. But, as Sarah Boseley explains, scientists dispute the drug’s effectiveness. Good news from a study published in Lancet Healthy Longevity looking at protection levels from getting Covid. It studied the risk of COVID reinfection in care home staff and occupants up to 10 months after first being unwell and showed substantial levels of protection is retained.And a new paper on Vitamin D deficiency in Africa – the first large prevalence study in children on the continent.Plus bestselling author and gynaecologist Dr Jen Gunter on her Menopause Manifesto, part two in our mini-series on Health Check. Dr Gunter unpicks the facts and feminism of how society’s focus on what happens to women’s bodies has shaped and hindered treatment for the menopause.Presenter: Claudia Hammond Producer: Erika WrightImage: Abstract medical icon of head showing Alzheimer's memory loss due to dementia and brain disease Credit: wildpixel/Getty Images

Could over the counter Steroids be driving the Black Fungus epidemic in India? Claudia talks to Dr Awadhesh Singh from the GD Hospital and Diabetes Institute in Kolkata who explains the link between Steroid use and the shocking surge in cases of this deadly disease. Guest Matt Fox from Boston University discusses mass Covid testing in Vietnam and a trial of mask wearing in Bangladesh, plus the renaming of Covid variants using the Greek alphabet. And bestselling author Dr Jen Gunter on her new book The Menopause Manifesto – own your health with facts and feminism!Presenter: Claudia Hammond Producer: Erika Wright(Picture: A doctor inspects a patient for mucormycosis inside a dedicated ward at MMG hospital in Ghaziabad, India. Photo credit: Sakib Ali/Hindustan Times/Getty Images.)

The kind boss who transformed their employee's mental health – Natalie and Gillian share their amazing story with Claudia Hammond. And new research finds kindness really is contagious - Alison van Diggelen hears from scientists in California that kindness really does spread. Plus guest professor Monica Lakhanpaul discusses vaccine effectiveness against the variant first identified in India and addresses ethical questions of vaccinating children. Plus new science on how mammals breathing through their bottoms could be a future solution to oxygenating human blood without risking the lung damage caused by ventilators.Presenter: Claudia Hammond Producer: Erika Wright(Photo: A boy protects his younger brother from the rain with an umbrella. Credit: Estersinhache fotografía/Getty Images)

New evidence for when to have your second Covid vaccine dose; Plus the long awaited results of a 20 year trial into Ovarian Cancer screening and whether picking the disease up early with a simple blood test helps to save lives. And Misophonia – the curious condition where sounds of other people eating can cause anger and panic. Presenter: Claudia Hammond Producer: Erika Wright(Picture: Vials of vaccine for Covid-19 to be administered by injection. Photo credit: A. Martin UW Photography/Getty Images.)

New research from The Lancet Diabetes & Endocrinology journal shows current body mass index [BMI] guidance is outdated and dangerous for people from different ethnic groups. The study’s principal investigator, Dr Rishi Caleyachetty unpicks the global implications of his findings.Maria Rebollo Polo – WHO lead for Neglected Tropical Diseases in Africa – explains the important task of mapping NTDs like Trachoma.Plus Khadidiatou Cisse reports from Benin on Trachoma – one of the oldest known infections and a leading cause of preventable blindness worldwide.And, have our memories really got worse during the pandemic? Professor Catherine Loveday of Westminster University discusses her new research on our memories during lockdown. Guest: Dr Ann RobinsonPresenter: Claudia Hammond Producer: Erika Wright(Picture: Female doctor weighing senior patient at medical clinic. Photo credit: Jose Luis Pelaez/Getty Images.)

As Tanzania announces new Covid prevention measures after the new president instigates a change in response to the pandemic, correspondent Rhoda Odhiambo discusses the implications for the country. And celebrating the Windrush generation in theatre - nurses who came to the UK from the Caribbean to work in the NHS share their memories in a new play. Plus Claudia talks to Mohsen Rajabi about his new research surveying Mental Health in Iran - both parents and children - after 16 months of school closures and hears from 18 year old Parnia Abharian about her first hand experience. And the science of a baby's first poo!Presenter: Claudia Hammond Producer: Erika Wright(Picture: People come to wash their hands with chlorinated water in Dar es Salaam, Tanzania in March 2020. Photo credit: Ericky Boniphace/AFP/Getty Images.)

As India surpasses 200,000 Covid deaths Claudia asks why the surge has been so steep and hears the latest from health reporter Anoo Bhuyan in Delhi. And there's good news of a new Malaria Vaccine showing 75% efficacy. Studio guest Tabitha Mwangi discusses this important breakthrough in the context of a new study from the Lancet Infectious Diseases Journal with the first clinical evidence of drug-resistant malaria mutations gaining foothold in Africa. Plus Caroline Williams on her new book MOVE! which unpicks the science of how movement opens up a hotline to our minds changing the way we think and feel.Presenter: Claudia Hammond Producer: Erika Wright(Photo: People wait to refill empty oxygen cylinders on 27 April 2021 in New Delhi, India. Credit: Sanjeev Verma/Hindustan Times/Getty Images)