The company says its vaccine is 90 per cent effective. What does this really mean and what do we still need to know? Graham Lawton reports.In contrast to his predecessor, US president-elect Joe Biden will use a science-based strategy to tackle the pandemic, says Adam Vaughan.Antibodies in the blood of people who have had covid-19 could be just what we need to tide us over until we have a vaccine, reports Graham Lawton.Many countries are starting new lockdowns, but it may already be too late to stop the second wave of coronavirus from eclipsing the first, reports Michael Le Page.Beware those who promise you that this will all be over soon.We are finally getting a picture of how many people will have covid-19 symptoms for months, and why this happens, reports Jessica Hamzelou.Coping with the covid-19 pandemic requires us to constantly calculate risk - both personally and across societies. That doesn't come easy to most of us, finds Dan Jones.Viruses are no lone wolves. They have social lives and work together in ways we ignore at our peril, finds Graham Lawton.The coronavirus has mutated very little, but as more people are treated or vaccinated it could face pressure to evolve, finds Graham Lawton.Could planned, pre-emptive lockdowns at regular intervals be a way to manage the spread of the coronavirus? Clare Wilson investigates.A plan to give the coronavirus to volunteers may help us test potential vaccines, if it gets ethical approval, says Michael Le Page.Wearisome it may be, but we need to hold a steady course on covid-19.From immunity to vaccines and face coverings, Jessica Hamzelou, Graham Lawton, Michael Le Page, Donna Lu and Adam Vaughan have the answers.The UK government ignored scientific advice and is bringing in three levels of restrictions for England, reports Layal Liverpool.There is more variability in signs of covid-19 than we thought. Understanding them could be key to treatment and reducing spread, finds Jessica Hamzelou.After being treated for covid-19 in hospital, US president Donald Trump has been criticised for downplaying the dangers of coronavirus, reports Adam Vaughan.Why don't we make disease cures that are themselves infectious?Daily covid-19 cases are rising across Europe, but is that just because countries are performing more tests? Michael Le Page investigates.The coronavirus has posed many challenges to doctors, the latest being "long-tail" symptoms, says doctor Selma Stafford.The UK has grand ambitions for testing, but is struggling to get it right.  https://www.selleckchem.com/products/gsk650394.html  There are solutions, reports Clare Wilson.The number of reported coronavirus cases in India is surging, and the true figure is likely to be even higher, reports Nilanjana Bhowmick.The halt to the Oxford vaccine trial wasn't cause for worry - it was a sign of the research process working as it should, says Clare Wilson.Genetic sequencing shows the virus behind covid-19 has barely evolved, which is good news for vaccine developers, finds Graham Lawton.As we approach the grim milestone of a million people killed by covid-19, Adam Vaughan examines the toll of the pandemic so far.As the pandemic reaches a million deaths, we must remain immune to indifference.Covid-19 is affecting ethnic minorities more severely, but we will never understand why if we don't collect the right data, says Alisha Dua.Will the spread of the coronavirus accelerate in the northern hemisphere this winter? Adam Vaughan investigates.Almost 3000 new cases reported in a day as the number of infections in people younger than 40 rises sharply, reports Donna Lu.Marie-Roseline Darnycka Bélizaire of the WHO tells Jessica Hamzelou about the challenges of fighting coronavirus in the face of limited resources.Thousands of volunteers are taking part in a US trial of the Oxford vaccine, raising hopes for results this year, reports Michael Le Page.Streamlining the approval process could help produce an urgently needed coronavirus vaccine, but some shortcuts might undermine safety, finds Michael Le Page.The proportion of people in Europe dying after being infected by the coronavirus seems to be falling. Adam Vaughan investigates why.Vladimir Putin has announced that Russia has approved a coronavirus vaccine, but is it safe, asks Michael Marshall.The return of covid-19 to the country after more than 100 days free of infections shows that nobody can relax, reports Alice Klein.If a covid-19 vaccine is finally developed, tough decisions await about who should be first in line for the limited initial supply, says Graham Lawton.Two rapid tests for the coronavirus will be rolled out in the UK, but neither is supported by published data, reports Jessica Hamzelou.We need to think globally, not nationalistically to beat the coronavirus.With schools in many countries set to reopen in September, researchers are assessing their safety, reports Adam Vaughan.Blood type may affect whether you catch the coronavirus or the severity of your symptoms.The world is facing a resurgence of covid-19 cases as the pandemic continues to accelerate, reports Adam Vaughan.The UK government wants people to lose weight to reduce their risk of severe covid-19, but slimming down is no simple task, reports Clare Wilson.The new policy in England is based on evidence that they limit the spread of coronavirus, finds Clare Wilson.An early trial of a vaccine candidate from the University of Oxford has produced a promising immune response, reports Michael Le Page.In our fights against covid-19 and obesity, our best weapon is research.The virus appears to be getting less lethal in the UK and US, but the reasons are far from clear.The UK has just three months to get ready for a covid-19 second wave that could be deadlier than the first, reports Jessica Hamzelou.Six months into the global outbreak, we are learning what measures are most effective at halting the coronavirus, reports Jessica Hamzelou.As people return to public buildings, there is disagreement over the risk of airborne spread of the coronavirus, reports Michael Le Page.Promising evidence suggests that we can develop at least some immunity to the coronavirus - but how strong is it and how long will it last? Graham Lawton reports.