Green means go?From some countries, yes. As lockdown restrictions ease, the government has announced a new traffic light […]

Covid rules in England requiring secondary school pupils to wear face coverings in classrooms could be dropped from […]

Last week the Biden administration made the surprise announcement that the US would support a proposal to waive […]

Thousands of doctors feel under pressure from their employers to work extra shifts, often unpaid, to help tackle […]

Global deaths from covid-19 are not 3.27 million, as official figures suggest, but 6.93 million up to 3 […]

Management of SARS-CoV-2 infection continues to evolve. For patients requiring hospital treatment, mortality can be high (up to […]

A parliamentary investigation into the actions of President Jair Bolsonaro and his former ministers is under way in […]

As the world entered 2021, the covid-19 pandemic began a new phase, one dominated by worries over emerging […]

Where are the major trials for covid treatments?Dozens of large trials and hundreds of smaller studies are investigating […]

Greenhalgh and colleagues omit a serious limitation of two wavelength pulse oximetry.1 They mention “falsely low readings with […]