The Centre has recalled the measles vaccine, after the administration of which four children died in Tamil Nadu's Tiruvallur district on Wednesday. Instructions have been issued to the States to stop the use of this vaccine until further orders, while the manufacturer has been asked to not to make any further supply, Health and Family Welfare Minister Anbumani Ramadoss told journalists here on Thursday. An experts committee would enquire into the causes of the death and submit its report within two weeks. Thereafter action would be taken, he said.