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Notifiable Communicable Disease Incidences & Rates
By Year of Onset, 1995 - 2000
Los Angeles County

Number of Reported Cases                                                                                                            Rates

Disease

2000

1999

1998

1997

1996

1995

Amebiasis

106

134

158

148

215

187

Botulism

0

4

3

3

4

2

Brucellosis

4

3

2

6

12

3

Campylobacteriosis

1,273

1,089

1,215

1,523

1,736

1,401

Cholera

0

0

2

0

0

2

Coccidioidomycosis

51

48

51

46

70

80

Cryptosporidiosis

74

71

94

77

149

211

Cysticercosis

36

27

23

34

33

26

Dengue

3

3

6

2

0

2

E. coli O157:H7

27

12

23

20

18

9

Encephalitis

46

39

46

34

33

59

Foodborne outbreaks

40

39

32

40

12

15

Giardiasis

499

592

678

770

971

940

Haemophilus influenzae type b

1

0

7

10

4

6

Hansen's Disease (Leprosy)

9

10

13

18

9

10

Disease

2000

1999

1998

1997

1996

1995

Hepatitis A

839

1,123

888

1,480

1,371

1,062

Hepatitis B

65

61

92

109

247

231

Hepatitis C

28

21

12

23

246

205

Hepatitis unspecified

11

9

10

16

28

22

Kawasaki syndrome

28

29

37

20

20

39

Legionellosis

14

16

20

32

12

16

Listeriosis, nonperinatal

19

21

24

14

30

26

Listeriosis, perinatal

8

12

7

8

5

10

Lyme disease

5

8

3

4

3

5

Malaria

43

62

50

55

62

76

Measles

5

1

3

4

2

7

Meningitis, viral

260

227

441

227

185

167

Meningococcal infections

53

49

50

74

59

52

Mumps

29

24

21

39

37

42

Pertussis

102

236

77

32

120

103

Psittacosis

0

1

0

1

0

0

Disease

2000

1999

1998

1997

1996

1995

Q-fever

1

0

1

0

0

0

Relapsing fever

0

1

0

0

0

0

Rheumatic fever, acute

1

1

0

1

2

1

Rubella

3

0

0

5

3

3

Salmonellosis

989

1,101

1,253

1,675

1,773

2,084

Shigellosis

832

669

783

848

1,130

1,747

Strongyloidiasis

1

7

9

4

11

17

Tetanus

0

2

1

4

1

4

Trichinosis

0

0

3

2

0

1

Tularemia

0

0

0

2

1

1

Typhoid fever, case

21

20

17

26

31

26

Typhoid fever, carrier

5

4

12

1

4

6

Typhus fever

17

6

7

13

16

11

Vibrio

18

3

31

28

23

12

 

Incident Rate of Reported Cases (per 100,000 Population)**

Disease

2000

1999

1998

1997

1996

1995

Amebiasis

1.15

1.46

1.74

1.64

2.42

2.14

Botulism

-

0.04

0.03

0.03

0.05

0.02

Brucellosis

0.04

0.03

0.02

0.07

0.14

0.03

Campylobacteriosis

13.77

11.87

13.36

16.83

19.55

16.00

Cholera

-

-

0.02

-

-

0.02

Coccidioidomycosis

0.55

0.52

0.56

0.51

0.79

0.91

Cryptosporidiosis

0.80

0.77

1.03

0.85

1.68

2.41

Cysticercosis

0.39

0.29

0.25

0.38

0.37

0.30

Dengue

0.03

0.03

0.07

0.02

-

0.02

E. coli O157:H7

0.29

0.13

0.25

0.22

0.20

0.10

Encephalitis

0.50

0.43

0.51

0.38

0.37

0.67

Giardiasis

5.40

6.45

7.45

8.51

10.93

10.74

Haemophilus influenzae type b

0.01

-

0.08

0.11

0.05

0.07

Hansen's disease (Leprosy)

0.10

0.11

0.14

0.20

0.10

0.11

Disease

2000

1999

1998

1997

1996

1995

Hepatitis A

9.07

12.24

9.76

16.35

14.99

12.13

Hepatitis B

0.70

0.67

1.01

1.20

2.78

2.64

Hepatitis C

0.30

0.23

0.13

0.25

2.77

2.34

Hepatitis unspecified

0.12

0.10

0.11

0.18

0.32

0.25

Kawasaki syndrome

0.30

0.32

0.41

0.22

0.23

0.45

Legionellosis

0.15

0.17

0.22

0.35

0.14

0.18

Listeriosis, nonperinatal

0.21

0.23

0.26

0.15

0.34

0.30

Listeriosis, perinatal *

5.54

7.69

4.19

5.02

3.19

5.81

Lyme disease

0.05

0.09

0.03

0.04

0.03

0.06

Malaria

0.47

0.68

0.55

0.61

0.70

0.87

Measles

0.05

0.01

0.03

0.04

0.02

0.08

Meningitis, viral

2.81

2.48

4.85

2.51

2.08

1.91

Meningococcal infections

0.57

0.53

0.55

0.82

0.66

0.59

Mumps

0.31

0.26

0.23

0.43

0.42

0.48

Pertussis

1.10

2.57

0.85

0.35

1.35

1.18

Psittacosis

-

0.01

-

0.01

-

-

Disease

2000

1999

1998

1997

1996

1995

Q-fever

0.01

-

0.01

-

-

-

Relapsing fever

-

0.01

-

-

-

-

Rheumatic fever, acute

0.01

0.01

-

0.01

0.02

0.01

Rubella

0.03

-

-

0.06

0.03

0.03

Salmonellosis

10.70

12.00

13.77

18.51

19.97

23.81

Shigellosis

9.00

7.29

8.61

9.37

12.73

19.96

Strongyloidiasis

0.01

0.08

0.10

0.04

0.12

0.19

Tetanus

-

0.02

0.01

0.04

0.01

0.05

Trichinosis

-

-

0.03

0.02

-

0.01

Tularemia

-

-

-

0.02

0.01

0.01

Typhoid fever, case

0.23

0.22

0.19

0.29

0.35

0.30

Typhoid fever, carrier

0.05

0.04

0.13

0.01

0.05

0.07

Typhus fever

0.18

0.07

0.08

0.14

0.18

0.13

Vibrio

0.19

0.03

0.34

0.31

0.26

0.14

* Rates for perinatal listeriosis were calculated as cases per 100,000 live births.
** Rates of disease based on less than 19 cases or events are considered "unreliable." A zero rate made from no events is especially hazardous and are not reported here, except with a dash ("-").

Source: Los Angeles County Dept. of Health Services

 

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