People going abroad for education, jobs or as part of Indian contingent for the Tokyo Olympic, will have to get their CoWIN vaccination certificates linked to their passport. They can also take the second dose of vaccine after 28 days, the Centre said on June 7 as part of a new set of rules for vaccination. The facility shall be available to those who need to undertake international travel for the specified purposes till August 31, the government said. The new rules also said that mention of vaccine type as "Covishield" is sufficient & \"no other qualifying entries are required", the government added. This sets-off questions whether the vaccine developed by the Oxford University & AstraZeneca is only acceptable abroad. Prime Minister Narendra Modi announced on June 7 that the Centre will provide vaccines free of charge to people above the age of 18 and would take back control of vaccination from states. The new rules will come into effect from June 21.