Rates* of reported cases† of Hepatitis A virus infection, by state or jurisdiction — United States, 2020–2021

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◀ Figure 1.1
Figure 1.3 ▶
Rates* of reported cases † of Hepatitis A virus infection, by state or jurisdiction — United States, 2020–2021
Distribution of rates of reported hepatitis A, by state or jurisdiction, for 2020 and 2021. The US rate in 2021 was 1.7 reported cases per 100,000 population. Arkansas and Mississippi had the highest rates of reported hepatitis A during 2021. Download Data (xlsx)
Source: CDC, National Notifiable Diseases Surveillance System.
* Rates per 100,000 population. Rate calculations used bridged-race population estimates in 2020 and single-race population estimates in 2021.
† Reported confirmed cases. For the case definition, see Acute Hepatitis A.
Only states with rates for 2020 and 2021 are shown. State/jurisdiction and year for no reported cases: Alaska (2020) and District of Columbia (2021).
State or jurisdiction ranked in decreasing order by the 2021 rate, 2020 rate, and then alphabetical order by name.

During 2021, the rates of reported hepatitis A ranged from a high of 15.5 cases per 100,000 population in Arkansas to a low of 0.1 cases per 100,000 population in Alaska (not included in Figure 1.2), Nevada, Rhode Island, and South Dakota. Changes in rates during 2020 and 2021 were influenced by timing of hepatitis A outbreaks within jurisdictions.

The largest absolute increase in rates was observed in North Carolina, with a rate during 2021 of 8.9 cases per 100,000 population compared to 4.8 cases per 100,000 population in 2020.

In contrast, the largest absolute decrease in rates was observed in South Carolina where the 2021 rate was 6.5 cases per 100,000 population, a decrease from a rate of 22.9 cases per 100,000 population in 2020.

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