The Karnataka government is struggling to control the rising number of Covid-19 positive cases across the state, especially in capital Bengaluru, and it has no comprehensive strategy to tackle the spread, Biocon Chairperson Kiran Mazumdar-Shaw told ET’s Ayan Pramanik and Raghu Krishnan in an interview. Edited Excerpts:As India is scaling up testing, it is seeing tens of thousands of new cases each day. Have the Centre and State governments