Epidemiology Data & Reports

Reports

Annual Disease Counts

DISEASE 2010 2011 2012 2013 2014 2015 2016 2017 2018
HIV 18 20 18 17 11 17 18 7 17
AIDS 6 4 3 3 3 4 3 1 5
Campylobacteriosis 101 88 77 79 72 75 62 72 45
Chlamydia 673 815 862 983 1033 1083 1147 1258 1195
Coccidiodomycosis * (Valley Fever) 102 170 107 49 22 62 231 368 463
Cryptosporidiosis 24 12 7 5 8 6 8 8 9
E. Coli 13 2 10 13 13 11 16 16 13
Giardiasis 9 17 16 7 10 16 10 9 8
Gonorrhea 31 50 84 62 150 169 231 182 189
Hepatitis A 1 0 4 2 0 0 2 1 1
Hepatitis B (Chronic) 36 40 21 17 17 25 17 38 22
Hepatitis C (Community) ** - 104 - 68 - 67 - - 5
Hepatitis C (Correctional) - - 337 272 227 148 138 98 139
Lyme Disease 0 1 0 3 3 4 2 3 2
Measles (Rubeola) 0 1 0 0 0 0 0 2 1
Meningitis (Bacterial) 4 2 3 0 0 4 4 8 5
Meningitis (Viral) 35 12 3 17 12 21 13 12 12
MRSA 0 0 1 0 2 1 0 0 1
Pertussis 371 15 14 17 45 21 29 15 21
Rubella 0 0 0 0 0 0 0 0 0
Salmonella 33 20 42 42 39 50 40 29 21
Shigellosis 5 4 2 4 7 9 2 8 13
Syphilis (Primary/Secondary) 0 2 5 6 6 10 17 14 19
Tuberculosis 4 6 3 4 3 2 1 6 2
Note: Numbers in italics represent preliminary case counts still under investigation; case counts may change as investigations are completed.

* Coccidiodomycosis reporting can be delayed; case counts for previous years will be updated as data becomes available. 

** Many persons are tested for HCV more than once, in different counties. The State of California regularly de-duplicates cases that have been reported in multiple jurisdictions, and provides this updated number for each county. This actual number of newly diagnosed cases is generally lower than is reported by laboratory testing and SLO County medical providers. The numbers included here reflect de-duplicated case counts, which are not available for every year.
 

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