2021, Catherine received her first dose of COVID-19 vaccine by NHS staff at the Science Museum in London, encouraging use of the vaccine and thanking the staff for "playing a part in the rollout". On 15 September 2021, Catherine visited RAF Brize Norton in Oxfordshire and met the military members and civilians who were involved in the evacuation of Afghan refugees during the 2021 Taliban offensive. In October 2021, William and Catherine visited the Royal Botanical Gardens in Kew, London to take part in Generation Earthshot, an educational initiative inspired by the Earthshot Prize. In October 2022, Catherine became patron to Preet Chandi, a British Army medical officer who aimed to complete a 1,000-mile solo expedition in the South Pole after finishing a 700-mile journey in the continent earlier that year. Catherine hosted a Christmas carol concert called "Together At Christmas" at Westminster Abbey in December 2021, honouring charities and individuals that served the communities during the COVID-19 pandemic. The concert was produced by Westminster Abbey and BBC Studios Events Productions and broadcast by ITV. She played the piano during a performance of "For Those Who Can't Be Here" by Tom Walker. She hosted a second Christmas carol service at the abbey in December 2022 to honour the "efforts of individuals, families and communities across the UK," and pay tribute to Queen Elizabeth II. In March 2022 and amid the Russian invasion of Ukraine, Catherine and William made a donation to help the refugees. In February 2023, they donated to the Disasters Emergency Committee (DEC) which was helping victims of the 2023 Turkey–Syria earthquake. Mental health advocacy Catherine has tackled issues surrounding mental health and disabilities. She has previously made visits to charities and hospitals such as St Thomas' Hospital and Maurice Wohl Clinical Neuroscience Institute to spend time with mothers and children who deal with these issues. Catherine has been credited with raising national awareness of children's mental health; Benita Refson, president of Place2Be, has praised her work, saying she would "shine the spotlight on child mental health", while Peter Fonagy, CEO of the Anna Freud Centre has called her one of the most important figures in the field, and stated that "to the millions of children who have been suffering in silence, she is their voice". In recognition of their work with charities concerned with children's mental health, Catherine and her husband were awarded the Gold Blue Peter