> I'm unaware of a single study on the safety or efficacy of mixing vaccine types like this. The Com-Cov study: https://papers.ssrn.com/sol3/papers.cfm?abstra

> I'm unaware of a single study on the safety or efficacy of mixing vaccine types like this. The Com-Cov study: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3874014 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3874014