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The DISEASE CONTROL BRANCH is committed to the protection of public health through early detection, intervention and treatment of communicable diseases!

The Disease Control Branch provides a variety of services to the individual and the community: preventive care (TB screening); treatment of acute problems (tuberculosis); and investigations to prevent the spread of certain communicable diseases.

The Communicable Disease Program provides investigation, consultation and information on contagious diseases, including water and food borne outbreaks. The program provides referrals for post-exposure treatment for individuals exposed to a communicable disease, if indicated.

Contact the Communicable Disease Program at: (951) 358-5107

Disease Watch

Disease Watch

Valley Fever

Valley Fever in CA

Valley Fever report (Jan. - June 2019)  - CDPH

Measles (Updated: 04.29.19)

Measles FAQs Eng/Spa

Measles -- Travel

Measles -- Outbreaks in US

Flu 2018-19 (Updated: 04.29.19)

ICU cases: 71

Influenza-associated deaths: 9

Flu 2018-19 Surveillance Report

Food Safety Alert from the CDC

Travel Health Notices 

Flu 2017-18

Individuals 0-64 years of age:

2017-18 ICU cases: 86

Flu associated deaths: 23
(Last updated: 04.30.18)

2017-18 Vaccine effectiveness/CDC

Surveillance Report

Special Season EMS Report

Week 52


Individuals 0-64 years of age:
ICU: 27 cases
Influenza related deaths: 2
(Last updated 3/31/17)

Surveillance Report (Updated 12.19.17)
Weekly Influenza Snapshot (3/19/17-3/25/17)
FluView - 2017-2018 Season Week 2 ending 1/14/17 
View Advisories
CDPH Report
Surveillance Report  Archive

West Nile: 

May, 2019-2020

Human cases: 2 (Updated: 09.03.19)

2018/April, 2019

Human cases: 15 (Updated 1.11.19)

Human cases: 2017: 33 (Updated 01.16.18)

2016: 10 Deaths: 0
(Updated 1/6/17)
2015: 138* Deaths: 6**
Riverside County Public Health Officer Dr. Cameron Kaiser discusses the West Nile Virus (Video)
West Nile GIS map at:

Zika: 2018-2019

Travel associated: 1

(Updated: 1.11.19)

Zika: 2017-18
Riverside County Human Cases:
Travel Associated: 3 
Locally Acquired: 0
(Last Updated 01.16.18)

Zika: 2016
Riverside County Human Cases:
Travel Associated: 16 
Locally Acquired: 0

(Last Updated 5/8/17)

Hepatitis A

*Outbreak-linked cases in 2017: 2 (Last updated: 01.08.18)

(*Same strain identified in outbreak jurisdictions)

Non-outbreak-linked cases:

2017: 12 (Last updated 01.08.18)

2016: 11

2015: 14

CDPH Zika-Health Information
Zika FAQ English/Spanish (Updated April, 2017)

Pregnant Women Urged to Avoid Zika Areas

Travel Alerts:
Health and Travel Advisory/Zika  (Feb. 2017)

Zika travel reminder from CDPH  (Feb. 8, 2017) 

World TB Day--March 2017
2016 TB Fact Sheet
CDC: World TB Day -- March 24, 2017

Leprosy (Hansen's Disease):
Frequently Asked Questions
English     Spanish



*Probable and Confirmed Cases.

**Includes deaths in which the patient had the illness but it could not be determined West Nile was the cause of death.

Older items have been moved to the Archive page.

Updated 6/23/17


Department of Public Health
Disease Control Branch
Health Administration Building
4065 County Circle Drive, Riverside, CA 92503
(951) 358-5107 | FAX 358-5446 | TDD 358-5124 | Email: