"Covaxin doses can last up to one day only, while Covishield doses can last up to three to four days," Jain told reporters after reviewing preparations at Guru Teg Bahadur COVID Care Centre at Gurdwara Rakab Ganj Sahib in central Delhi.
Delhi has so far received 5.5 lakh doses of coronavirus vaccines for the 18-44 category, and over 43 lakh doses for 45-plus, and healthcare and frontline workers, according to government data released on Sunday.
Around 39 lakh doses have been administered in the national capital so far.
Till Sunday evening, Delhi had 4.65 lakh doses of coronavirus vaccines available for those above 45, and healthcare and frontline workers, while 2.74 lakh doses were available for the 18-44 age category.
The health minister said the dip in the positivity rate and the number of new infections over the last fortnight is a "glimmer of hope".
"The number of cases has reduced from around 28,000 to 13,000 now. The positivity rate has come down from a high of 36 per cent to around 20 per cent," Jain said.