e lipid mixtures (see Table 1) — is unknown. The implications for future use of SARS-CoV-2 vaccines with an adenovirus carrier and protein subunit, which are commonly formulated with polysorbate 80, a nonionic surfactant and emulsifier that has a structure similar to PEG, are also currently unknown.6,13 According to the current CDC recommendations, all persons with a history of an anaphylactic reaction to any component of the mRNA SARS-Cov-2 vaccines should avoid these vaccines, and this recommendation would currently exclude patients with a histor