she's been a managing director world bank, and is now chair of gavi, that's the global alliance for vaccinescial covid—i9 envoy for africa, charged with mobilising international economical support for the point today. we are also joined by doctor tshidi moeti. she is a medical doctor from botswana, where she worked extensively in public health, including in programmes to tackle tuberculosis and hiv infections. five years ago, she became the first woman to be elected as the regional director for africa in the world health organization, the who. welcome to you both, ladies, and also to our audience. i'm going to give you a round of applause. you can't hear it maybe, but anyway, there we go. remember you, too, can join the conversation — it's #bbcglobalquestions. let's go to our first question. benedict, from the democratic republic of congo butjoins us from coventry in england. benedict, what's your question, please? my question to the panel is just wanting to know, is it true that the covid—i9 cannot spread in hot temperature countries? we had so many questions on social media asking about th