An app could catch 98.5% of all Covid-19 infections. Why isn't it available? Adrienne Matei

The world wasn't prepared for the Covid-19 pandemic – and it still isn't. Critical shortages of personal protective equipment and ventilators continue to put medical professionals and patients at unnecessary risk. Meanwhile, long wait times for test results contribute to viral spread. Yet throughout this year, promising scientific innovations have been developed that could help reduce deaths until everyone can get the vaccine. In late September, researchers at MIT announced that they had developed an algorithm that can accurately detect Covid-19 infections over the phone.