The current spike in UK covid cases is a result of a steady build-up over the last month, says Dr Veer Pushpak Gupta, physician and researcher at National Health Service, UK. Dr Angelique Coetzee, credited to have discovered Omicron in South Africa, says that BA.2 sub-variant is fast-spreading but not too different from the original variant. According to Dr Gupta, the United Kingdom's policy on curbs will depend on the rate of hospitalisations.