2009 New York State Acute Hepatitis A Surveillance Summary

Cases Reported January 1, 2009 through December 31, 20091

Acute Hepatitis A

  • Number of confirmed cases2: 48
  • NYS rate per 100,000 population: 0.433
  • U.S. rate per 100,000 population4: 1.0

Cases by Age

Age (years) N %
≤1 0 0.0
2-5 2 4.2
6-10 1 2.1
11-20 8 16.7
21-30 12 25.0
31-40 5 10.4
41-50 3 6.3
50+ 17 35.4
Mean Age 38.7

Cases by Gender

Gender N %
Male 26 54.2
Female 22 45.8

Cases by Race

Race N %
White 21 43.8
Black 1 2.1
Alaskan Native/America Indian 0 0.0
Asian/Pacific Islander 7 14.6
Other 6 12.5
Unknown 13 27.1

Cases by Ethnicity

Ethnicity N %
Non-Hispanic 30 62.5
Hispanic 11 22.9
Unknown 7 14.6

Reported Cases by County5

County Reported Cases
Albany 2
Broome 2
Clinton 1
Delaware 1
Erie 3
Fulton 1
Monroe 1
Nassau 8
Onondaga 1
Orange 3
Oswego 1
Putnam 1
Rensselaer 1
Rockland 3
Suffolk 10
Ulster 2
Westchester 6
Yates 1

Footnotes

  1. Represents cases reported to the NYSDOH by local health departments during 2009, excluding New York City.
  2. Confirmed Case Definition (based on national surveillance guidelines)
    • A discrete onset of symptoms,
    • Jaundice or elevated liver enzymes, and
    • IgM anti-HAV positive test result
    • Confirmed cases also include patients who meet the clinical criteria and are epidemiologically linked to a laboratory confirmed case (i.e., household or sexual contact with an infected person during the 15-50 days prior to onset of symptoms).
  3. Source: Census.gov 2009 State Population Estimates
  4. Source: Centers for Disease Control and Prevention, MMWR Vol. 58 No. SS-3
  5. Includes only counties that reported at least one case of acute hepatitis A in 2009

Note: Percentages may not equal 100 due to rounding

For more information, or if you have questions about this summary report, please contact the Bureau of Communicable Disease Control at (518) 473-4439 or email hepatabc@health.state.ny.us.

New York State Confirmed Hepatitis A Cases Reported 2002-2009

New York State Confirmed Hepatitis A Cases Reported 2002-20091

Years Cases
2002 188
2003 146
2004 1172
2005 112
2006 1023
2007 794
2008 66
2009 48

Footnotes

  1. Excludes New York City
  2. New York State introduced enhanced surveillance in 34 counties across the state
  3. ACIP recommends all children aged 12-23 months be vaccinated
  4. ACIP post-exposure prophylaxis recommendations revised - persons aged 2-40 receive vaccince instead of immunoglobulin

Number and percent* of cases with confirmed acute hepatitis A who reported selected epidemiologic risks by age group - New York State 2009

Risk Factors for Infection Age Group (Years)
<2 2-5 6-10 11-20 21-30 31-40 41-50 >50 Total
N % N % N % N % N % N % N % N % N %
Close contact of a case1 0 N/A 1/1 100.0 0/0 0.0 0/1 0.0 0/2 0.0 0/2 0.0 0/2 0.0 0/2 0.0 1/10 10.0
International Travel2 0 N/A 1/2 50.0 1/1 100.0 3/7 42.9 9/12 75.0 3/5 60.0 0/3 0.0 6/17 35.3 23/47 48.9
Homosexual male 0 N/A 0/1 0.0 0/1 0.0 0/4 0.0 0/9 0.0 1/2 50.0 0/0 0.0 0/7 0.0 1/24 4.2
Injection drug use 0 N/A 0/2 0.0 0/0 0.0 3/7 14.3 0/12 0.0 1/5 20.0 0/3 0.0 0/17 0.0 2/44 4.5
Day Care Contact3 0 N/A 0/2 0.0 0/1 0.0 0/7 0.0 0/12 0.0 0/4 0.0 0/3 0.0 2/17 11.8 2/46 4.3
Food or waterborne outbreak 0 N/A 0/2 0.0 0/1 0.0 0/6 0.0 0/11 0.0 0/4 0.0 0/3 0.0 0/16 0.0 0/40 0.0
Ate raw shellfish 0 N/A 0/2 0.0 0/1 0.0 0/6 0.0 3/10 30.0 0/3 0.0 0/3 0.0 2/17 11.8 5/42 11.9
Other4 0 N/A 0/2 0.0 0/0 0.0 0/6 0.0 0/12 0.0 1/3 33.3 0/3 0.0 0/16 0.0 1/42 2.4
No reported risks5 0 N/A 1/2 50.0 0/1 0.0 4/8 50.0 3/12 25.0 2/5 40.0 3/3 100.0 9/17 52.9 22/48 45.8
Total number of cases 0 0 2 4.2 1 2.1 8 16.7 12 25 5 10.4 3 6.3 17 35.4 48 100

*The percentage of cases for which a specific risk factor was reported was calculated on the basis of the total number of cases for which any information for that exposure was reported. Percentages might not total 100% because multiple risk factors might have been reported for a single case.

†Exposures that occurred during the 2–6 weeks before onset of illness.

Footnotes

  1. Household and sexual contact of a case, babysitter or playmate of a case, or other type of close contact of a case.
  2. Includes persons living in the case's household who traveled in the 3 months prior to case's onset of illness.
  3. Works in a day care setting, has child in day care, or is a close contact of a child or employee in day care.
  4. Other includes street drug use and multiple sex partners (heterosexual).
  5. Other includes street drug use and multiple sex partners (heterosexual).

International Travel – Countries Visited by Hepatitis A Cases in the 2-6 Weeks Prior to Onset of Symptoms – New York State 2009

Country N %
India 2 8.7
Mexico, Central and South America 13 56.5
Europe 2 8.7
Caribbean 2 8.7
Africa 2 8.7
Unknown 2 8.7
Total 23 100.0