Chennai: The first "Sunday shutdown" with exception only for hospitals and allied health services brought Chennai and suburbs to a standstill while the city's civic body said its fever camps to help detect coronavirus cases have evoked tremendous response from the people.It was a virtual curfew with deserted roads, bridges and intersections fully blocked by police using barricades and with the exception of police, sanitary workers and health personnel of the Greater Chennai Corporation (GCC) most of others stayed indoors.City police said as many as 4,799 cases have been filed for violation of curbs and 7,907 vehicles (7,395 two-wheelers, 168 autorickshaws, 344 light motor vehicles) have been seized.While vegetable shops, groceries and.