LONDON – The Delta variant of SARS-CoV-2 originally identified in India is causing more serious illness and reducing the effectiveness of vaccines compared to the Alpha (Kent) variant, according to a nationwide study covering Scotland’s whole population of 5.4 million.

Novavax Inc. reported an overall efficacy rate of 90.4% in a phase III trial of its COVID-19 protein subunit vaccine, NVX-CoV2373, which it conducted in the U.S. and Mexico. The vaccine provided 100% protection against moderate and severe disease and 100% protection against variants of SARS-CoV-2 deemed not to be of concern or interest. Gaithersburg, Md.-based Novavax is on track to file for approval during the third quarter. By the end of that period, it aims to ramp up production to a monthly run rate of 100 million doses and it aims to scale that to a monthly run rate of 150 million doses by the end of the fourth quarter.

The FDA issued a June 10 warning letter to Innova Medical Group Inc. in connection with the company’s rapid antigen tests for the SARS-CoV-2 virus, an action that accompanies a class I recall and a safety communication.