More than 12.7 billion doses of Covid-19 injections have been administered since it became available nearly two years ago. Some have received one or two doses, while others have had multiple doses. Yet many don’t know what these injections actually contain. Official sources provide ingredient lists. For example, vials from Moderna and BioNTech/Pfizer famously contain mRNA. While, Oxford/AstraZeneca and Johnson and Johnson’s (Janssen’s) injections don’t contain mRNA but instead feature an adenovirus expressing the SARS-CoV-2 spike protein. Several items on the list of these publicly disclosed ingredients, such as mRNA and SM-102, come with controversy. Public health officials, regulators, and...