Also, if you have had an immediate allergic reaction after being administered the first dose of the COVID-19 vaccine, you should not get the second dose.
(undated) – The CDC has learned of reports that some people have experienced allergic reactions after receiving the COVID-19 vaccine.
The CDC is recommending to those who have had an immediate reaction to any ingredient in the mRNA COVID-19 vaccine, to not get either of the currently available mRNA COVID-19 vaccines. Also, if you have had an immediate allergic reaction after being administered the first dose of an mRNA COVID-19 vaccine, you should not get the second dose.
The CDC is also recommending that those who are allergic to PEG and polysorbate should not get an mRNA COVID-19 vaccine.
Polysorbate is not an ingredient in either mRNA COVID-19 vaccine but is closely related to PEG, which is in the vaccines.
For more information on the CDC allergic reactions, you can visit,https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/allergic.