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Data released on 16 December by the Covid Symptoms Study,1 run by the health science company Zoe and King’s College London, show that the top five symptoms reported in the app for omicron infection were runny nose, headache, fatigue (either mild or severe), sneezing, and sore throat. Tim Spector, lead scientist on the Zoe Covid Study app, who has been calling for the list of symptoms to be updated since the emergence of the delta variant,2 said a change was overdue. Spector said the UK was now an international exception in not listing cold-like symptoms as likely indicators of covid infection, noting that the US Centers for Disease Control and Prevention, the World Health Organization, and European countries such as Spain and France had all updated their advice.