The United Nations Covid-19 summit passed up a pre-recorded video message from Adar Poonawalla, CEO of the world's largest vaccine manufacturer, who was scheduled to speak in an afternoon session headlined 'The Road to a COVID-19 Vaccine - a Global Public Good.'

"Unfortunately, the video couldn't be provided in time in the required format," General Assembly spokesman Brenden Varma told IANS. Varma did not provide details on the required format or whether the video arrived and when.