Understanding Protein Subunit COVID-19 Vaccines

Protein Subunit COVID-19 Vaccines Have Been Rigorously Evaluated for Safety

Vaccines against COVID-19 are safe y effective.

Protein subunit COVID-19 vaccines have been held to the same rigorous safety and effectiveness standards than all other vaccines in the United States. The only COVID-19 vaccines that the Food and Drug Administration (FDA) makes available in the United States (through its approval or emergency use authorization) are those that meet these standards.

Protein Subunit Vaccines Have Been Used for Years

More than 30 years ago, a hepatitis B vaccine became the first protein subunit vaccine to be approved for use in people in the United States. Another example of other protein subunit vaccines used in the United States today include acellular pertussis (whooping cough) vaccines.

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