figure 2.1. reported number of acute hepatitis a cases — united states, 2000–2012

Figure 2.1. Reported number of acute hepatitis A cases — United States, 2000–

2012

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

Year

Nu

mb

er

of

case

s

Source: National Notifiable Diseases Surveillance System (NNDSS)

Figure 2.2. Incidence of acute hepatitis A,

by age group — United States, 2000–2012

0

1

2

3

4

5

6

7

0–9 yrs

10–19 yrs

20–29 yrs

30–39 yrs

40–49 yrs

50–59 yrs

≥ 60 yrs

Year

Re

po

rte

d c

ase

s/1

00

,00

0 p

op

ula

tio

n

Source: National Notifiable Diseases Surveillance System (NNDSS)

Figure 2.3. Incidence of acute hepatitis A,

by sex — United States, 2000–2012

0

1

2

3

4

5

6

Male

Female

Year

Re

po

rte

d c

ase

s/1

00

,00

0 p

op

ula

tio

n

Source: National Notifiable Diseases Surveillance System (NNDSS)

Figure 2.4. Incidence of acute hepatitis A,

by race/ethnicity — United States, 2000–2012

0

1

2

3

4

5

6

7

8

9

10American Indian/Alaska Native

Asian/Pacific Islander

Black, Non-Hispanic

White, Non-Hispanic

Hispanic

Year

Re

po

rte

d c

ase

s/1

00

,00

0 p

op

ula

tio

n

Source: National Notifiable Diseases Surveillance System (NNDSS)

Figure 2.5. Availability of information on risk behaviors/exposures associated with acute

hepatitis A — United States, 2012

Source: National Notifiable Diseases Surveillance System (NNDSS)

* Includes case reports indicating the presence of at least one of the following risks 2–6 weeks prior to onset of acute, symptomatic hepatitis A: 1) having traveled to hepatitis A-endemic regions of Mexico, South/Central America, Africa, Asia/South Pacific, or the Middle East; 2) having sexual/household or other contact with suspected/confirmed hepatitis A patient; 3) being a child/employee in day care center/nursery/preschool or having had contact with such persons; 4) being involved in a foodborne/waterborne outbreak; 5) being a man who has sex with men; and 6) using injection drugs.

20113%

79351%

56836%

Risk identified*No risk identi-fiedRisk data miss-ing

Figure 2.6a. Acute hepatitis A reports*,by risk behavior† — United States, 2012

*A total of 1,562 case reports of hepatitis A were received in 2012. † More than one risk behavior may be indicated on each case report.

§ No risk data reported.¶A total of 769 hepatitis A cases were reported among males in 2012.Source: National Notifiable Diseases Surveillance System (NNDSS)

Number of cases

International Travel

Injection-drug use

Men who have sex with men¶

0 250 500 750 1000

92

13

4

621

555

61

849

994

704

Missing§NoYes

Figure 2.6b. Acute hepatitis A reports*,by risk exposure† — United States, 2012

*A total of 1,562 case reports with hepatitis A were received in 2012. † More than one risk exposure may be indicated on each case report.

§ No risk data reported.Source: National Notifiable Diseases Surveillance System (NNDSS)

Sexual/household contact with hepati-tis A-infected per-

son

Child/employee in a daycare center

Contact with a daycare child or

employee

Food/waterborne outbreak

Other contact with hepatitis A patient

0 100 200 300 400 500 600 700 800 900 1000

38

14

34

13

23

716

859

758

690

731

808

689

770

859

808

Missing§NoYes

Number of cases