The vaccine is a viral vector vaccine, inhaled with a device similar to an asthma inhaler. Another trial for the mucosal vaccine human challenge project has begunMUSICC is the international consortium that aims to run human challenge trials of mucosal Covid vaccines. Preclinical results for versions of a protein subunit vaccine from Mynvax Private (India): Mynvax previously developed a Covid vaccine (records here). Back to contentsAddendum 1: List of authorized next generation Covid vaccines (with countries)There are now 7 next-generation Covid vaccines authorized in 7 countries. Previous update posts specifically on next generation Covid vaccines prior to this monthly series (beginning May 2023):All my posts on Covid vaccines, beginning from March 2020, are tagged here.