it comes amid calls for tougher restrictions before the end of the year. in london the mayor, sadiq khan, has declared a major incident, warning the nhs in the capital was at risk of being overwhelmed. dan johnson reports. some vaccination centres are now open 2a hours a day as the arms race against 0micron hits new records, but the new variant is still doubling case numbers every two days. we doubling case numbers every two da s. ~ . doubling case numbers every two da 5. ~ . . , , doubling case numbers every two das. . . days. we are incredibly concerned by the hue days. we are incredibly concerned by the huge surge days. we are incredibly concerned by the huge surge in days. we are incredibly concerned by the huge surge in the days. we are incredibly concerned by the huge surge in the omicron - the huge surge in the 0micron variant over the last 2a hours, we have had the largest number of new cases since this pandemic began, more than 26,000 hospital admissions are going up,