US colleges and universities are asking Indian students, who have received Bharat Biotech's Covaxin or Russia's Sputnik V vaccine, to inoculate again.
Both of these vaccines are yet to be approved by the World Health Organisation (WHO), which is why students are being asked to inoculate with different vaccines before the start of the Autumn semester in the US colleges and universities.
These colleges and universities are citing a lack of data on the efficacy and safety of these vaccines.
Those who have already received the jabs that have not been approved by the WHO will have to wait for 28 days before they receive the first dose of WHO-approved vaccines in the US.
India sends about 2 lakh international students to US colleges every year.