Eight days after giving birth to a baby girl, 22-year-old Mehak says she is living off food that she manages to get once every two days. When she gets really hungry, she drinks water. Labourers from Uttarakhand who work in north Delhi's Model Town, Mehak and her husband Gopal, 25, are among the thousands who have been pushed to the brink of starvation by the nationwide lockdown that was announced without warning three weeks ago to contain the coronavirus pandemic.