Ranchi: After small containment zones were back in the state capital, the district administration stepped up its efforts to control the spread of Covid-19 by intensifying contract tracing, conducting surprise inspections at affected areas and surveillance of people returning from other states. Till Saturday, of the total active caseload in the state, Ranchi alone accounted for more than 56% cases. As many as 49 medical teams have been deployed across the district to visit containment zones to examine the health parameters of infected persons and advise them on medication. Apart from physical visits, doctors are also available on phone and are connecting with patients on video calls if required.