Disease

Cases

1996

1997

1998

1999

2000

Five-year
Mean

Five-year
Median

AIDS

602

502

476

356

385

464

476

Campylobacteriosis

693

571

605

511

592

594

592

Chlamydia

10,100

9,979

11,267

11,884

13,986

11,443

11,267

Cryptosporidiosis

59

49

58

47

74

57

58

E. coli O157:H7

83

75

91

107

131

97

91

Giardiasis

874

718

736

654

517

700

718

Gonorrhea

6,425

6,383

6,643

6,154

6,500

6,421

6,425

Hepatitis A

366

327

156

105

132

217

156

Hepatitis B

148

89

101

77

85

100

89

Histoplasmosis

88

*97

*98

75

82

88

88

Legionellosis

23

46

71

53

41

47

46

Listeriosis

19

11

17

12

9

14

12

Lyme Disease

16

16

*20

13

23

18

16

Malaria

16

17

9

22

11

15

16

Measles

0

0

3

2

0

1

0

Meningococcal Disease

63

55

*67

*60

59

61

60

Mumps

8

15

7

5

2

7

7

Pertussis

128

104

185

90

153

132

128

Rabies, Animal

9

13

12

13

14

12

13

Rocky Mt. spotted fever

7

1

2

10

4

5

4

Salmonellosis

590

586

649

572

677

615

590

Shigellosis

161

94

159

368

1,591

475

161

Primary & Secondary Syphilis

207

148

212

449

356

310

212

Tuberculosis

202

168

188

150

145

171

168

Typhoid Fever

4

3

2

6

6

4

4

Yersiniosis

13

10

16

19

13

14

13