COVID-19 variant HV.1: What you need to know

HV.1 is the main COVID-19 variant in the U.S. in the fall and winter of 2023. Learn about HV.1 and how you can stay protected.

A variant is a type of virus that has changed from its original form. These changes (mutations) happen as a virus spreads from person to person. These changes can affect how easily the virus spreads or how well treatments work to fight it.

This fact sheet answers common questions about the COVID-19 variant HV.1, such as:

  • What is the COVID-19 variant HV.1?
  • What is a variant?
  • What’s different about the HV.1 variant?
  • What are the symptoms of the HV.1 variant?
  • I have the latest COVID-19 vaccine. Am I protected?
  • How can I protect myself?
COVID-19 variant HV.1: What you need to know

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