Municipal health department had appealed people to take booster dose to avoid infection of corona subtype BF7 and XBB variant, but still 80 lakh Mumbaikars have not taken booster dose and till now only 14 lakh 71 thousand 11 people have taken booster dose. Have taken the dose. There has been no spread of BF7 and XBB variants in Mumbai, but the health department has appealed people to take booster doses as a precautionary measure.