Scramble for plasma: Families of Covid-19 patients in Mumbai are on a desperate chase for convalescent plasma. Even as the demand for plasma grows, very few recovered patients are willing to donate it. Official data, until Sept 30, shows that blood banks have sold 9,194 plasma units across Maharashtra and 1,216 units were in stock. Family members say the stress of finding the donor belonging to the right blood group is overwhelming. Even though Maharashtra has 1.25 million recovered Covid-19 patients, it has managed to tap only about 1 per cent of them for plasma donation. Social workers say they