The health secretary has warned that soaring numbers of flu infections could "overwhelm" the NHS if a scheduled five-day strike by resident doctors is not called off. Wes Streeting said a "particularly nasty" strain of flu - H3N2 - is currently circulating at a level which is "unprecedented for this time of year". Demand for vaccines is soaring across the UK as the highly-infectious 'super flu' hospitalises people in record numbers, raising concerns over shortages of stock. Read more: https://