Bengal’s health administrators are worried about a tendency among a section of people to stock oxygen cylinders and concentrators at home fearing that someone in the family might need them after contracting Covid. Home healthcare providers, who either sell or rent out oxygen concentrators and cylinders, said their stock was exhausted because of the panic reaction. Such is the demand for oxygen devices that even stores that sell mobile phones are now keeping oxygen concentrators and they are selling fast. “We have asked the drug controller to ensure there is no hoarding of oxygen cylinders. More than 4,000 oxygen cylinders have been seized in raids conducted with the police,” said Ajay Chakraborty, Bengal's director of health services.