Registering a sudden rise in COVID-19 cases, Delhi’s positivity rate increased to 2.7 per cent, with 137 cases on Monday-- the highest in two months. India logged 2,183 new infections taking the total tally to 4,30,44,280, while the active cases declined to 11,542, registering a 90 per cent jump in the last 24 hours according to the Union Health Ministry.