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Hepatitis A Incidence Map

heat map
heat map

See if Hepatitis A is Putting Patients in Your Community at Risk

The total cases of hepatitis A reached 39,903 and 35 states were directly affected as of June 25, 2021. Since the outbreaks were first identified in 2016, 35 states have publicly reported the following as of May 28, 2021. To get the most up-to-date information, check the CDC website.1

View National cases
View State cases

You can view your state's status and national status as of 2020 in the map above or please see https://www.cdc.gov/hepatitis/outbreaks/2017March-HepatitisA.htm for more up-to-date information.

View National cases
View State cases

*CUMULATIVE WEEKLY HEPATITIS A INCIDENCE FOR 2018-2020:

Cumulative weekly incidence data are provided by the CDC NNDSS and are available at:

https://data.cdc.gov/NNDSS/NNDSS-TABLE-1P-Hemolytic-uremic-syndrome-post-diar/wgyw-mswy. The data cited for the period of 2018 through 2020 represent preliminary data only, are subject to further adjustment by the CDC, and should not be construed, cited, or referenced as final. See https://wwwn.cdc.gov/nndss/infectious-tables.html#tabs-2-1 for more information. States with no reported cases show no data.

ANNUAL HEPATITIS A INCIDENCE FOR 2016-2020:

Annual incidence data are provided by the CDC National Notifiable Diseases Surveillance System (NNDSS) and are available at: https://www.cdc.gov/hepatitis/statistics/2017surveillance/TablesFigures-HepA.htm#tabs-1-1. Annual data are considered finalized data and are created within approximately 6 months after the end of the calendar year. The CDC finalizes NNDSS data in collaboration with the state and territorial health department data providers and the relevant CDC program for each notifiable disease and condition. Finalized counts by condition and reporting jurisdiction are published by the CDC after each state and territory health department verifies the finalized data. The NNDSS surveillance data likely represent an underestimate of the true number of cases of a given condition because of under-recognition and under-reporting of disease. See https://wwwn.cdc.gov/nndss/infectious-tables.html#tabs-2-2 for more information. For annual data as published by the CDC for 2018, see https://www.cdc.gov/hepatitis/statistics/2018surveillance/HepA.htm and for 2019 see https://www.cdc.gov/hepatitis/statistics/2019surveillance/HepA.htm.States with no reported cases show no data.

Resources for You and Your Patients

Create awareness in your community with patient educational materials and guidelines for your practice.

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State with an ongoing outbreak

Hepatitis A in adults may be more prevalent than you think

Total cases of hepatitis A, 2016-20203:  



Current hepatitis A widespread US outbreak data are evolving, and the information is current as of April 20, 2021. For the most up-to-date information, please visit www.cdc.gov/hepatitis/outbreaks/2017march-hepatitisA.htm. For more information about other hepatitis A outbreaks, please visit www.cdc.gov/hepatitis/outbreaks/hepatitisaoutbreaks.htm.

 

The years in which each state experienced a person-to-person outbreak are shown in orange.

View States: A - E | F - L | M - S | T - Z

State 2016 2017 2018 2019 2020 Total

AL

19 23 38 242 884 1206


AK

2 1 0 3


AZ
32 59 77 585 44 797


AR
13 7 254 206 336 813


CA
229 947 189 256 201 1822


CO
22 65 31 333 54 505


CT
16 17 15 17 13 77


DE
1 6 7 36 27 77
State 2016 2017 2018 2019 2020 Total

FL
115 261 548 3392 833 5149

GA
44 24 84 844 506 1502

HI
285 8 4 1 6 304

ID
7 4 5 127 4 147

IL
71 73 93 185 68 490

IN
18 21 964 1398 127 2528

IA
16 9 10 9 5 49

KS
5 6 14 106 148 279

KY
9 71 3560 1318 54 5012

LA
12 8 37 687 766 1508
State 2016 2017 2018 2019 2020 Total

ME
8 7 9 45 138 207

MD
37 29 52 888 225 431

MA
64 52 364 204 36 720

MI
112 670 299 68 20 1169

MN
15 30 16 68 69 198

MS
2 3 13 128 269 415

MO
16 27 243 359 294 939

MT
3 3 12 6 24

NE
21 4 6 15 4 50

NV
14 19 41 102 7 183

NH
8 7 12 309 27 363

NJ
74 71 70 610 54 879

NM
4 4 23 104 4 139

NY
99 218 165 391 275 1148

NC
52 29 103 154 350 688

ND
2 4 1 7

OH
36 45 1687 1802 275 3845

OK
11 9 5 13 2 40

OR
15 20 23 27 30 115

PA
62 69 99 696 136 1062

RI
4 6 7 6 3 26

SC
21 21 30 662 1124 1858

SD
1 1 1 8 1 12
State 2016 2017 2018 2019 2020 Total

TN
7 6 654 2160 246 3073

TX
139 129 88 159 109 624

UT
12 159 135 20 11 337

VT
5 2 3 12 16 38

VA
190 46 82 309 184 811

WA
31 28 35 467 292 853

WV
15 6 2247 467 78 2735

WI
7 16 15 31 12 81

WY
18 5 12 1 36

Current hepatitis A widespread US outbreak data are evolving, and the information is current as of April 2021. For the most up-to-date information, please visit www.cdc.gov/hepatitis/outbreaks/2017march-hepatitisA.htm. For more information about other hepatitis A outbreaks, please visit www.cdc.gov/hepatitis/outbreaks/hepatitisaoutbreaks.htm.

 

CUMULATIVE WEEKLY HEPATITIS A INCIDENCE FOR 2018-2020:

Cumulative weekly incidence data are provided by the CDC NNDSS and are available at:

https://data.cdc.gov/NNDSS/NNDSS-TABLE-1P-Hemolytic-uremic-syndrome-post-diar/wgyw-mswy. The data cited for the period of 2018 through 2020 represent a snapshot of preliminary data as of April 20, 2021, are only subject to further adjustment by the CDC, and should not be construed, cited, or referenced as final. See https://wwwn.cdc.gov/nndss/infectious-tables.html#tabs-2-1 for more information. States with no reported cases show no data.

ANNUAL HEPATITIS A INCIDENCE FOR 2016-2020:

Annual incidence data are provided by the CDC National Notifiable Diseases Surveillance System (NNDSS) and are available at:

https://www.cdc.gov/hepatitis/statistics/2017surveillance/TablesFigures-HepA.htm#tabs-1-1. Annual data are considered finalized data and are created within approximately 6 months after the end of the calendar year. The CDC finalizes NNDSS data in collaboration with the state and territorial health department data providers and the relevant CDC program for each notifiable disease and condition. Finalized counts by condition and reporting jurisdiction are published by the CDC after each state and territory health department verifies the finalized data. The NNDSS surveillance data likely represent an underestimate of the true number of cases of a given condition because of under-recognition and under-reporting of disease. See https://wwwn.cdc.gov/nndss/infectious-tables.html#tabs-2-2 for more information. For annual data as published by the CDC for 2018, see https://www.cdc.gov/hepatitis/statistics/2018surveillance/HepA.htm and for 2019 see https://www.cdc.gov/hepatitis/statistics/2019surveillance/HepA.htm States with no reported cases show no data.

 

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References

  1. Widespread person-to-person outbreaks of hepatitis A across the United States. Centers for Disease Control and Prevention. Reviewed May 3, 2021. Accessed May 5, 2021. https://www.cdc.gov/hepatitis/outbreaks/2017March-HepatitisA.htm.
  2. Nelson NP, Weng MK, Hofmeister MG, et al. Prevention of hepatitis A virus infection in the United States: recommendations of the Advisory Committee on Immunization Practices, 2020. MMWR Recomm Rep. 2020;69(No. RR-5):1–38. Accessed May 5, 2021. http://dx.doi.org/10.15585/mmwr.rr6905a1
  3. Nationally notifiable infectious diseases and conditions, United States: weekly tables. Centers for Disease Control and Prevention. Accessed May 5, 2021. https://wonder.cdc.gov//nndss/static/2020/53/2020-53-table1p.html.
  4. Recommended adult immunization schedule, United States, 2021. Updated February 11, 2021. Centers for Disease Control and Prevention. Accessed May 5, 2021. https://www.cdc.gov/vaccines/schedules/downloads/adult/adult-combined-schedule.pdf.