Offline: The second wave

The spectre of a second wave of COVID-19 hangs over us. Some infectious disease specialists believe that SARS-CoV-2 might be losing virulence. Most are less sanguine. Dr Tedros Adhanom Ghebreyesus, WHO's Director-General, reported last week that “the pandemic is accelerating”—across the Americas, south Asia, and the Middle East. “The world is in a new and dangerous phase”, he said. “The virus is still spreading fast, it is still deadly, and most...