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Notifiable Communicable Diseases & Conditions

Reported Cases in Los Angeles County
By Year of Onset, 2011-2017

Viruses

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Number of Reported Cases

See Incident Rate of Reported Cases in second table below.

Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Amebiasis 57 70 62 64 57 99 86
Botulism 2 6 2 1 4 4 3
Brucellosis 11† 6 8 7 10 4 6
Campylobacteriosis 1,807† 1,564 1,623 1,506 1,703 1,546 1,259
Coccidioidomycosis 1001† 809 613 426 362 327 304
Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Cryptosporidiosis 148† 98 56 78 48 44 51
Cysticercosis 6 6 12 9 1 11 37
Dengue‡ 16 46 30 32 2 2 0
E. coli, Shiga Toxin-Producing 309† 282 175 90 102 97 88
Encephalitis 129 69 136 92 79 75 59
Giardiasis 372 452 379 346 392 294 292
Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Hansen’s Disease (Leprosy) 3 1 0 3 1 3 2
Hepatitis A, Acute 87† 66 33 42 60 47 45
Hepatitis B, Acute Non-Perinatal 32 42 50 42 55 38 60
Hepatitis C, Acute 8 5 2 5 5 7 10
Legionellosis 165 245 171 140 85 111 116
Listeriosis, Nonperinatal 25 33 34 27 23 26 19
Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Listeriosis, Perinatal‡ 5 4 3 5 4 7 6
Lyme Disease 1 1 4 5 11 1 6
Malaria‡ 38† 24 27 21 16 19 22
Measles 3 18 28 13 3 6 8
Meningitis, Viral 283 183 367 400 355 303 317
Meningococcal Infections 10 20 12 11 17 12 37
Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Mumps 85 18 14 10 9 13 3
Pertussis 476 217 859 1,558 296 154 453
Pneumococcal Disease, Invasive 512 503 468 460 525 504 658
Q-fever 3 2 5 1 2 3 0
Salmonellosis 1,107 1,047 1,144 1,141 1,010 1,041 900
Shigellosis 732† 584 508 350 227 306 264
Disease Year of Onset
2017† 2016 2015 2014 2013 2012 2011
Streptococcus, Group A Invasive 419† 353 227 222 195 168 175
Typhoid Fever, Case 8 11 14 15 17 6 15
Typhoid Fever, Carrier 1 2 0 0 0 0 3
Typhus Fever, Flea-Borne 67 47 54 44 68 50 38
Vibriosis 53 33 43 52 26 29 19
West Nile Virus Infections 268 153 300 218 165 174 63

† 2017 data with number of cases over or equal to the 5-year 95% upper limit.
‡ Not locally acquired. All infections occurred during travel outside Los Angeles County.
§ Onset by specimen collection date.


Notifiable Communicable Diseases & Conditions

Annual Incidence Rates* in Los Angeles County
By Year of Onset, 2011-2017
 
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Amebiasis 0.59 0.73 0.65 0.68 0.61 1.06 0.93
Botulism – 0.06 – – – – 0.03
Brucellosis 0.11 0.06 0.08 0.07 0.11 – 0.06
Campylobacteriosis 18.74 16.29 16.96 15.93 18.11 16.63 13.60
Coccidioidomycosis 10.38 8.43 6.40 4.51 3.85 3.52 3.28
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Cryptosporidiosis 1.53 1.02 0.59 0.83 0.51 0.47 0.55
Cysticercosis 0.06 0.06 0.13 0.10 – 0.12 0.04
Dengue† 0.17 0.48 0.31 0.34 – – –
E. coli, Shiga Toxin-Producing 3.20 2.94 1.83 0.95 1.08 1.04 0.95
Encephalitis 1.34 0.72 1.42 0.97 0.84 0.81 0.64
Giardiasis 3.86 4.71 3.96 3.66 4.17 3.16 3.15
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Hansen’s Disease (Leprosy) – – – – – – 0.02
Hepatitis A, Acute 0.90 0.69 0.34 0.44 0.64 0.51 0.49
Hepatitis B, Acute Non-Perinatal 0.33 0.44 0.52 0.44 0.58 0.41 0.65
Hepatitis C, Acute 0.08 – – – – 0.08 0.11
Legionellosis 1.71 2.55 1.79 1.48 0.90 1.19 1.25
Listeriosis, Nonperinatal 0.26 0.34 0.36 0.29 0.24 0.28 0.21
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Listeriosis, Perinatal‡ – – – – – 5.71 4.95
Lyme Disease – – – – 0.12 – 0.06
Malaria† 0.39 0.25 0.28 0.22 0.17 0.20 0.24
Measles 0.03 0.19 0.29 0.14 0.03 – 0.09
Meningitis, Viral 2.93 1.91 3.83 4.23 3.77 3.26 3.42
Meningococcal Infections 0.10 0.21 0.13 0.12 0.18 0.13 0.40
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Mumps 0.88 0.19 0.15 0.11 0.10 – 0.03
Pertussis 4.94 2.26 8.97 16.48 3.15 – 4.89
Pneumococcal Disease, Invasive‡ 5.31 5.24 4.89 4.87 5.58 5.42 7.10
Q-fever – – – – – – –
Salmonellosis 11.48 10.91 11.95 12.07 10.74 11.20 9.72
Shigellosis 7.59 6.08 5.31 3.70 2.41 3.29 2.85
Disease Annual Incidence Rate (Cases per 100,000) *
2017 2016 2015 2014 2013 2012 2011
Streptococcus, Group A Invasive 4.34 3.68 2.37 2.35 2.07 1.81 1.89
Typhoid Fever, Case 0.08 0.11 0.15 0.16 0.18 0.06 0.16
Typhoid Fever, Carrier – – – – – – 0.03
Typhus Fever, Flea-Borne 0.69 0.49 0.56 0.47 0.72 0.54 0.41
Vibriosis 0.55 0.34 0.45 0.55 0.28 0.31 0.21
West Nile Virus Infections 2.78 1.59 3.13 2.31 1.75 1.87 0.68

* Cases per 100,000 population. Rates based on less than 19 cases or events are considered unreliable. Data are suppressed for 5 or fewer cases.
† Not locally acquired. All infections occurred during travel outside Los Angeles County.
‡ Rates for perinatal listeriosis were calculated as cases per 100,000 women aged 15–44 years.


Source: Los Angeles County Dept. of Public Health