Notifiable Communicable Diseases
Incidences & Rates
Los Angeles County

By Year of Onset, 2005-2011

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Number of Reported Cases

Incident Rate of Reported Cases

Disease Year of Onset
2011 2010 2009 2008 2007 2006 2005
Amebiasis 86 119 107 115 122 94 114
Botulism 3 1 1 5 1 2 8
Brucellosis 6 7 4 3 3 5 8
Campylobacteriosis 1,259 1,239 1,135 1,072 825 775 725
Cholera 0 0 0 0 0 0 0
Coccidioidomycosis 304 235 171 228 145 196 214
Cryptosporidiosis 51 61 51 41 50 48 45
Cysticercosis 4 3 9 6 7 11 15
Dengue 0 1 2 0 3 2 10
E. coli O157:H7 21 12 18 16 12 12 13
E. coli Other Stec 67 45 20 11 13 6 -
Encephalitis 59 51 51 89 65 46 72
Foodborne Outbreaks 22 17 16 18 21 37 32
Giardiasis 292 308 354 355 441 376 313
Haemophilus Influenzae Type B 0 0 2 0 1 5 3
Hansen’s Disease (Leprosy) 2 2 3 1 5 2 2
Disease Year of Onset
2011 2010 2009 2008 2007 2006 2005
Hepatitis A 45 51 66 80 78 364 480
Hepatitis B 60 54 41 66 55 62 57
Hepatitis C 10 4 8 5 3 4 3
Hepatitis Unspecified 4 5 19 4 10 7 4
Kawasaki Syndrome a 43 65 70 55 52 75 56
Legionellosis 116 108 66 59 40 24 31
Listeriosis, Nonperinatal 19 14 15 20 21 25 25
Listeriosis, Perinatal 6 4 5 2 6 12 3
Lyme Disease 6 5 4 9 8 16 7
Malaria 22 25 24 30 26 33 45
Measles 8 8 1 1 0 1 0
Meningitis, Viral 317 570 399 597 395 373 527
Meningococcal Infections 37 26 21 30 24 46 37
Mumps 3 20 7 7 5 10 10
Pertussis 453 972 156 80 69 150 439
Pneumococcal Disease, Invasive 657 576 786 662 624 533 590
Disease Year of Onset
2011 2010 2009 2008 2007 2006 2005
Psittacosis 0 0 1 0 0 1 0
Q-fever 0 1 0 2 2 1 0
Relapsing Fever 0 0 0 0 0 2 0
Rheumatic Fever, Acute 0 1 1 1 0 0 0
Rubella 1 0 0 1 0 0 1
Salmonellosis 900 1,142 1,194 1,638 1,081 1,217 1,085
Shigellosis 264 355 259 498 463 524 710
Staphylococcus Aureus Infection 44 28 27 25 - - -
Streptococcus, Group A Invasive 175 191 129 156 173 197 179
Strongyloidiasis 0 0 0 0 0 0 0
Tetanus 0 0 0 2 0 4 0
Trichinosis 0 0 0 0 0 1 0
Tularemia 0 0 0 0 0 0 0
Typhoid Fever, Case 15 15 17 14 17 17 12
Typhoid Fever, Carrier 3 4 1 4 1 3 4
Typhus Fever 38 31 9 18 17 10 9
Vibrio 19 13 26 18 13 18 14
West Nile Virus 63 4 25 170 43 16 43

a) Base on 7 1/2 months data for year 2011.


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

 
Disease Annual Incidence Rate (Cases per 100,000) b
2011 2010 2009 2008 2007 2006 2005
Amebiasis 0.88 1.21 1.1 1.18 1.26 0.97 1.19
Botulism 0.03 0.01 0.01 0.05 0.01 0.02 0.08
Brucellosis 0.06 0.07 0.04 0.03 0.03 0.05 0.08
Campylobacteriosis 12.8 12.6 11.6 11 8.51 8.04 7.57
Cholera - - - - - - -
Coccidioidomycosis 3.1 2.4 1.75 2.34 1.5 2.03 2.23
Cryptosporidiosis 0.52 0.62 0.52 0.42 0.52 0.5 0.47
Cysticercosis 0.04 0.03 0.09 0.06 0.07 0.11 0.16
Dengue - 0.01 0.02 - 0.03 0.02 0.1
E. coli O157:H7 0.21 0.12 0.18 0.16 0.12 0.12 0.14
E. coli Other Stec 0.68 0.46 0.21 0.11 0.13 0.06 -
Encephalitis 0.6 0.52 0.52 0.91 0.67 0.48 0.75
Giardiasis 2.98 3.14 3.62 3.65 4.55 3.9 3.27
Haemophilus Influenzae Type B - - 0.02 - 0.01 0.05 0.03
Hansen’s Disease (Leprosy) 0.02 0.02 0.03 0.01 0.05 0.02 0.02
Disease Annual Incidence Rate (Cases per 100,000) b
2011 2010 2009 2008 2007 2006 2005
Hepatitis A 0.46 0.52 0.68 0.82 0.8 3.77 5.01
Hepatitis B 0.61 0.55 0.42 0.68 0.57 0.64 0.59
Hepatitis C 0.1 0.04 0.08 0.05 0.02 0.04 0.03
Hepatitis Unspecified 0.04 0.05 0.19 0.04 0.1 0.07 0.04
Kawasaki Syndrome - 0.66 0.72 0.57 0.54 0.78 0.58
Legionellosis 1.18 1.1 0.68 0.61 0.41 0.25 0.32
Listeriosis, Nonperinatal c 0.19 0.14 0.15 0.21 0.22 0.26 0.26
Listeriosis, Perinatala 4.95 3.23 4.6 1.45 4.23 8.47 2.14
Lyme Disease 0.06 0.05 0.04 0.09 0.08 0.17 0.07
Malaria 0.22 0.25 0.25 0.31 0.27 0.34 0.47
Measles 0.08 0.08 0.01 0.01 - 0.01 -
Meningitis, Viral 3.23 5.81 4.08 6.14 4.08 3.87 5.5
Meningococcal Infections 0.38 0.27 0.21 0.31 0.25 0.48 0.39
Mumps 0.03 0.2 0.07 0.07 0.05 0.1 0.1
Disease Annual Incidence Rate (Cases per 100,000) b
2011 2010 2009 2008 2007 2006 2005
Pertussis 4.62 9.91 1.6 0.82 0.71 1.56 4.58
Pneumococcal Disease, Invasive 6.7 5.87 8.05 6.8 6.44 5.53 6.16
Psittacosis - - 0.01 - - 0.01 -
Q-fever - 0.01 - 0.02 0.02 0.01 -
Relapsing Fever - - - - - 0.02 -
Rheumatic Fever, Acute - 0.01 0.01 0.01 - - -
Rubella 0.01 - - 0.01 - - 0.01
Salmonellosis 9.17 11.6 12.2 16.8 11.2 12.6 11.34
Shigellosis 2.69 3.62 2.65 5.12 4.78 5.43 7.41
Staphylococcus Aureus Infection 0.45 0.29 0.28 0.26 - - -
Streptococcus, Group A Invasive 1.78 1.95 1.32 1.6 1.79 2.04 1.87
Strongyloidiasis - - - - - - -
Tetanus - - - 0.02 - 0.04 -
Trichinosis - - - - - 0.01 -
Tularemia - - - - - - -
Typhoid Fever, Case 0.15 0.15 0.17 0.14 0.18 0.18 0.13
Typhoid Fever, Carrier 0.03 0.04 0.01 0.04 0.01 0.03 0.04
Typhus Fever 0.39 0.32 0.09 0.19 0.18 0.1 0.09
Vibrio 0.19 0.13 0.27 0.19 0.13 0.19 0.15
West Nile Virus 0.64 0.04 0.26 1.75 0.44 0.17 0.45

b) 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 ("-"). Conclusions drawn from unreliable rates should be made with caution, if they are to be made at all.
c) Rates for perinatal listeriosis were calculated as cases per 100,000 live births.

Source: Los Angeles County Dept. of Public Health