San Joaquin County Public Health Services
Source: https://www.sjgov.org/department/hcs/departments/public-health-services
Archived: 2026-04-23 17:09
San Joaquin County Public Health Services
What can we help you find?
Our Mission
Protect, promote, and improve health and the conditions that impact well-being for all in San Joaquin County.
Our Mission
Protect, promote, and improve health and the conditions that impact well-being for all in San Joaquin County.
Health Alerts & Advisories
Legionella Health Advisory June 2025
This advisory is being issued to the healthcare community with a focus on healthcare providers in the City of Lodi.
Read more about advisory >
H5N1 Avian Flu Health Advisory (Updated)
San Joaquin County Public Health Services (SJCPHS) has identified 2 cases of H5N1 avian influenza infection (presumptively positive) in the county, in individuals who had contact with infected dairy cattle.
Read more about advisory >
Full Advisory Test
Please be advised that a case of measles has recently been confirmed in San Joaquin County.
View full advisory >
Please distribute to all providers and relevant medical staff in your office.
DATE
: March 8, 2024
TO
: Healthcare Providers
FROM
: Dr. Maggie Park, Public Health Officer
Situation:
Please be advised that a case of measles has recently been confirmed in San Joaquin County. The patient is a child who was exposed to measles overseas prior to arriving to the U.S. and presenting to a local urgent care. San Joaquin County Public Health
Services (SJCPHS) is conducting contact investigations of exposure cases.
Background:
There were no cases of measles reported in California in 2022. In 2023, California had 4 cases of measles. Our case in San Joaquin is the 3rd measles case in California for 2024, and the first in our county since 2014. Measles is a highly contagious
viral disease that can lead to serious complications, especially in unimmunized persons. About 9 out of 10 people who are not protected will become infected following exposure to the measles virus. Risk factors include international travel and
contact with international visitors. The MMR (measles, mumps, rubella) vaccine is highly protective.
Clinical Presentation:
Measles is characterized by a prodrome of fever (as high as 105 F) that lasts for a couple of days, followed by a cough, coryza, and conjunctivitis-the three “C”s , a pathognomonic enanthema (Koplik spots) followed by a maculopapular rash that spreads
from the head to the trunk to the lower extremities. Patients are contagious from 4 days before to 4 days after the rash appears. The incubation period is typically 10-12 days from exposure, with the rash usually appearing about 14 days after
exposure.
Actions Requested of Clinicians:
Suspect measles if there are compatible symptoms and risk factors.
Isolate the patient immediately, ideally in a single-patient airborne infection isolation room (AIIR) if possible, or in a private room with a closed door until AIIR is available.
Adhere to standard and airborne precautions
Immediately notify the facility infection control program and SJCPHS Disease Control and Prevention Program (209) 468-3822. After hours, call (209) 468-6000 and ask to speak with the on-call public health nurse. SJCPHS will assist with laboratory testing guidance and proper isolation and quarantine procedures.
Resources:
Centers for Disease Control and Prevention (CDC) infection control recommendations, click
here
California Department of Public Health (CDPH) infection control recommendations, click
here
CDPH EZIZ Measles Resources, click
here
CDPH’s Immunization Branch, click
here
COCA Now measles message, click
here
Community Announcement: Tracy Area Residents - May 2024
Increases in Cases of Valley Fever in Tracy and Surrounding Communities
Read more about advisory >
Flu / Covid19 / RSV Vaccine Information
Did you know that adults 65 years and older have a higher risk of serious complications including severe pneumonia, hospitalization, and death from COVID-19, RSV, and Flu?
Read more about advisory >
Bird (Avian) Flu Safety Info
Read more about advisory >
Measles Health Advisory
Please be advised that a case of measles has recently been confirmed in San Joaquin County. The patient is a child who was exposed to measles overseas prior to arriving to the U.S. and presenting to a local urgent care.
Read more about advisory >
View Health Advisories >
Programs & Services
Disease Control & Prevention >
Communicable Diseases
Disease Reporting
Public Health Laboratory
Vaccine Information for Parents & Caregivers
Emergency Preparedness >
Air Pollution
Build a Kit
Earthquake
Fires
First Aid
Food Safety
Heat Emergencies
More >
Local Oral Health Program >
The PHS Local Oral Health Program, in partnership with the SJ TEETH Coalition, works to improve dental health in the county.
Data Dashboards >
Learn more about PHS Data Science.
Family Health >
Programs that provide health services for some of the County's most vulnerable populations: infants, children, teens, pregnant women, and mothers.
Opioid Safety Coalition >
Fentanyl is Fatal (video)
Help for Addiction
Harm Reduction
Resources for Providers
Medication & Sharps Disposal
Health Equity >
Resources and information on addressing health disparities and inequities in our community, a PHS priority.
Smoking and Tobacco Prevention (STOPP) >
Healthy Retail Program
Community Engagement
Cessation Services
Tobacco Law Enforcement Program
Medical Providers >
This information is for healthcare providers in San Joaquin County.
Follow Us
View this profile on Instagram
SJC Public Health Services
(@
sjcphs
) • Instagram photos and videos
Community Announcements
Clínica Gratuita de Vacunación Contra la Gripe: Martes 21 de Octubre de 2025 a 18 de Abril de 2026
21 October, 2025-18 April, 2026
Free Flu Vaccination Clinic: Tuesdays Oct. 21, 2025 to April 18, 2026
21 October, 2025-18 April, 2026
Public Health Week 2026
6 April, 2026-10 April, 2026
Lab Week April 19-25, 2026
21 April, 2026 at 8 AM-25 April, 2026 at 5 PM
View All Events
Press Releases
Drug Take Back Day - April 25, 2026
April 20, 2026
Community Announcement – World TB Day, March 24, 2026
March 23, 2026
OTS Grant PHS Child Passenger Safety Program Jan 2026
January 8, 2026
Drug Take Back Day: Oct. 25, 2025
October 21, 2025
First Human Case of WEST NILE Virus in San Joaquin County in 2025
October 17, 2025
View All Press Releases
Media Inquiries
What can we help you find?
What can we help you find?
Our Mission
Protect, promote, and improve health and the conditions that impact well-being for all in San Joaquin County.
Our Mission
Protect, promote, and improve health and the conditions that impact well-being for all in San Joaquin County.
Health Alerts & Advisories
Legionella Health Advisory June 2025
This advisory is being issued to the healthcare community with a focus on healthcare providers in the City of Lodi.
Read more about advisory >
H5N1 Avian Flu Health Advisory (Updated)
San Joaquin County Public Health Services (SJCPHS) has identified 2 cases of H5N1 avian influenza infection (presumptively positive) in the county, in individuals who had contact with infected dairy cattle.
Read more about advisory >
Full Advisory Test
Please be advised that a case of measles has recently been confirmed in San Joaquin County.
View full advisory >
Please distribute to all providers and relevant medical staff in your office.
DATE
: March 8, 2024
TO
: Healthcare Providers
FROM
: Dr. Maggie Park, Public Health Officer
Situation:
Please be advised that a case of measles has recently been confirmed in San Joaquin County. The patient is a child who was exposed to measles overseas prior to arriving to the U.S. and presenting to a local urgent care. San Joaquin County Public Health
Services (SJCPHS) is conducting contact investigations of exposure cases.
Background:
There were no cases of measles reported in California in 2022. In 2023, California had 4 cases of measles. Our case in San Joaquin is the 3rd measles case in California for 2024, and the first in our county since 2014. Measles is a highly contagious
viral disease that can lead to serious complications, especially in unimmunized persons. About 9 out of 10 people who are not protected will become infected following exposure to the measles virus. Risk factors include international travel and
contact with international visitors. The MMR (measles, mumps, rubella) vaccine is highly protective.
Clinical Presentation:
Measles is characterized by a prodrome of fever (as high as 105 F) that lasts for a couple of days, followed by a cough, coryza, and conjunctivitis-the three “C”s , a pathognomonic enanthema (Koplik spots) followed by a maculopapular rash that spreads
from the head to the trunk to the lower extremities. Patients are contagious from 4 days before to 4 days after the rash appears. The incubation period is typically 10-12 days from exposure, with the rash usually appearing about 14 days after
exposure.
Actions Requested of Clinicians:
Suspect measles if there are compatible symptoms and risk factors.
Isolate the patient immediately, ideally in a single-patient airborne infection isolation room (AIIR) if possible, or in a private room with a closed door until AIIR is available.
Adhere to standard and airborne precautions
Immediately notify the facility infection control program and SJCPHS Disease Control and Prevention Program (209) 468-3822. After hours, call (209) 468-6000 and ask to speak with the on-call public health nurse. SJCPHS will assist with laboratory testing guidance and proper isolation and quarantine procedures.
Resources:
Centers for Disease Control and Prevention (CDC) infection control recommendations, click
here
California Department of Public Health (CDPH) infection control recommendations, click
here
CDPH EZIZ Measles Resources, click
here
CDPH’s Immunization Branch, click
here
COCA Now measles message, click
here
Community Announcement: Tracy Area Residents - May 2024
Increases in Cases of Valley Fever in Tracy and Surrounding Communities
Read more about advisory >
Flu / Covid19 / RSV Vaccine Information
Did you know that adults 65 years and older have a higher risk of serious complications including severe pneumonia, hospitalization, and death from COVID-19, RSV, and Flu?
Read more about advisory >
Bird (Avian) Flu Safety Info
Read more about advisory >
Measles Health Advisory
Please be advised that a case of measles has recently been confirmed in San Joaquin County. The patient is a child who was exposed to measles overseas prior to arriving to the U.S. and presenting to a local urgent care.
Read more about advisory >
View Health Advisories >
Programs & Services
Disease Control & Prevention >
Communicable Diseases
Disease Reporting
Public Health Laboratory
Vaccine Information for Parents & Caregivers
Emergency Preparedness >
Air Pollution
Build a Kit
Earthquake
Fires
First Aid
Food Safety
Heat Emergencies
More >
Local Oral Health Program >
The PHS Local Oral Health Program, in partnership with the SJ TEETH Coalition, works to improve dental health in the county.
Data Dashboards >
Learn more about PHS Data Science.
Family Health >
Programs that provide health services for some of the County's most vulnerable populations: infants, children, teens, pregnant women, and mothers.
Opioid Safety Coalition >
Fentanyl is Fatal (video)
Help for Addiction
Harm Reduction
Resources for Providers
Medication & Sharps Disposal
Health Equity >
Resources and information on addressing health disparities and inequities in our community, a PHS priority.
Smoking and Tobacco Prevention (STOPP) >
Healthy Retail Program
Community Engagement
Cessation Services
Tobacco Law Enforcement Program
Medical Providers >
This information is for healthcare providers in San Joaquin County.
Follow Us
View this profile on Instagram
SJC Public Health Services
(@
sjcphs
) • Instagram photos and videos
Community Announcements
Clínica Gratuita de Vacunación Contra la Gripe: Martes 21 de Octubre de 2025 a 18 de Abril de 2026
21 October, 2025-18 April, 2026
Free Flu Vaccination Clinic: Tuesdays Oct. 21, 2025 to April 18, 2026
21 October, 2025-18 April, 2026
Public Health Week 2026
6 April, 2026-10 April, 2026
Lab Week April 19-25, 2026
21 April, 2026 at 8 AM-25 April, 2026 at 5 PM
View All Events
Press Releases
Drug Take Back Day - April 25, 2026
April 20, 2026
Community Announcement – World TB Day, March 24, 2026
March 23, 2026
OTS Grant PHS Child Passenger Safety Program Jan 2026
January 8, 2026
Drug Take Back Day: Oct. 25, 2025
October 21, 2025
First Human Case of WEST NILE Virus in San Joaquin County in 2025
October 17, 2025
View All Press Releases
Media Inquiries
What can we help you find?