It’s a common tale: one person in a household gets COVID-19, while others escape it – even when sharing the same bed. Scientists say there are several possible explanations, including exposure to past common colds.
By Sarah L Caddy for The Conversation, The rise of the omicron variant has caused havoc around the world, just as the emergence of the delta and alpha variants did before. A pattern has emerged, with the world scrambling to respond to a new form of the coronavirus every six or so months. How can we reduce the risk of new variants appearing again and again?