NEW DELHI : The Delhi government will scale up COVID-19 testing through its network of 300 dispensaries and hospitals, and start aggressive contact tracing of coronavirus patients in the city, Health Minister Satyendar Jain said on Friday.The health minister said the AAP government is committed to doubling the COVID-19 test from the present 20,000 per day to 40,000 per day within a week in the national capital.Jain said the recent increase in number of COVID-19 cases in Delhi was due to various reasons, including patients from outside seeking treatment here, return of migrants who left Delhi during lockdown as well as increased testing."People can have free COVID-19 tests at the dispensaries whose time has been extended to five hours from 9.