COVID-19 infections fuelled by new coronavirus variants, some countries are seeking to counter low vaccine supplies with dosing patterns or volumes that stray from how the shots were tested in clinical trials.There are differences over the merits of alternative dosing strategies, with some arguing the urgency of the pandemic requires flexibility, while others oppose abandoning data-driven approaches for the sake of expediency.Also Read | The race to take fashion retail onlineHere is a list of what countries are doing:UNITED STATESThe U.S.
Food and Drug Administration has said that altering the authorised dosing or interval schedules of COVID-19 vaccines is premature and not supported by science, while acknowledging that such questions may.