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. 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?