Mumbai, Sept. 6 -- Highlighting the rise in Covid-19 patients in Maharashtra's "districts of concern" over the past 10 days, state authorities have expressed fear of a third wave to begin from these areas in western Maharashtra. Active cases in Mumbai, too, are on the rise. Of the state's 52,025 active patients, 37,897 (72.84%) are from five districts - Pune, Thane, Satara, Ahmednagar and Mumbai....