The European Medicine Agency (EMA), responsible for evaluating and supervising medicinal products for the European Union, has approved only four Covid-19 vaccines so far &ndash Comirnaty (BioNTech-Pfizer), Moderna, Vaxzevria (Oxford-AstraZeneca), and Janssen (Johnson & Johnson). Hence, doubts have been raised if Indians vaccinated with Covishield will be allowed to travel across the EU. The World Health Organization (WHO) has approved Covishield under emergency use listing (EUL) but EMA has not granted it any approval. Although Pune&rsquos Serum Institute makes Covishield in India with a license from AstraZeneca, they have not applied to the EMA for approval, reports said.