BBCIt was the most momentous event in UK history since World War Two. As a new virus took hold, millions of us were told to stay at home and billions of pounds were spent propping up the country's economy.The Covid inquiry will publish its second set of findings later today, looking in detail at the huge political choices made at the time - including how lockdowns were introduced, the closure of businesses and schools, and bringing in previously unthinkable social restrictions. "Did the government serve the people well, or did it fail them?" asked the lead counsel at the start of this part of the inquiry in 2023. Since then more than 7,000 documents have been made public from the time, including WhatsApp chats and emails, private diaries and confidential files.Here, BBC News has picked out some of the urgent messages and scribbled notes that shine a light on how critical decisions were taken in 2020.On 2 January 2020 an update appears on ProMed, a service used by health workers to warn of emerging diseases."World Health Organization in touch with Beijing after mystery viral pneumonia outbreak," it says."Twenty-seven people - most of them stallholders at the Huanan Seafood Wholesale Market - treated in hospital."The next day England's deputy chief medical officer, Jonathan Van Tam, sends the bulletin on to Peter Horby, a professor at Oxford University and chair of Nervtag, a group that advises the government on new viral threats.