Chandrayee Roy Choudhury, Canada: Researchers at McMaster University in Hamilton, Ontario have been approved to begin human trials on two Canadian -made CoVid 19 vaccines that are delivered by inhaled aerosol to target the lungs and upper airways.
Both inhaled vaccines are intended to act as boosters to be administered to participants who have previously received two doses of a CoVid 19mRNA vaccine such as Pfizer or Moderna's.