New Delhi: The number of containment zones in Delhi has jumped to 341 from 280 as the Delhi government remapped the containment zones following the decision to change the COVID-19 strategy of the government. It has also included a classification where the number of containment zones recently added will be specified separately. For example, 91 fresh containment zones have been added after June 21 in New Delhi.Also Read - Will Schools in Delhi Reopen as COVID Cases Decline? Sisodia Says Will Discuss Matter With DDMA Tomorrow

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The number of total containment zones in the city stands at 341, among which 307 are active, 34 have been scaled down but not de-contained. About 83 containment zones have been de-contained. Also Read - Delhi to Lift Weekend Curfew, Curbs on Markets Soon; Final Decision Tomorrow

South West Delhi has the maximum number of hotspots (71), followed by South (44).

A serological survey to undertake a comprehensive analysis of the spread of COVID-19 in Delhi commenced in some parts of the city on Saturday amid a rise in the number of coronavirus cases.

As part of the survey, blood samples of 20,000 people will be tested to ascertain the presence of anti-bodies, the Union health ministry has said.

The exercise will be jointly carried out by the National Centre for Disease Control (NCDC) and the Delhi government till July 10.