The Delhi High Court on Tuesday asked the AAP government in Delhi to ensure that the results and findings of the fourth phase of sero surveillance, which is being conducted by the authorities and is due to finish this week, are not leaked till the matter is taken up by the court. A division bench of the high court passed the directions after Delhi government’s additional standing counsel Satyakam informed the court that the sero surveillance would conclude on October 22 and the report would come a fortnight later.