Britain’s surprise new travel rules placing those vaccinated with Covishield in the "unvaccinated" category and asking Indians vaccinated with both doses to isolate for 10-days upon arrival has created quite an uproar back home, affecting travel plans of hundreds of Indians visiting the UK. Since Covishield is a British vaccine developed by Oxford AstraZeneca and manufactured under licence in Pune by the Serum Institute of India, the sudden decision has puzzled India.