NEW DELHI : Health Minister Satyendar Jain on Monday said Delhi has only one day's Covaxin stock left and its Covishield doses will last for just three to four days.The minister's remarks came a day after Chief Minister Arvind Kejriwal urged the Centre to direct manufacturers to increase vaccine supplies to the capital between May and July."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.