What is flea-borne typhus?Flea-borne typhus is a disease caused by the bacteria Rickettsia typhi and Rickettsia felis. Also called murine typhus, most cases in the United States are reported from…

What is syndromic surveillance?As defined by Centers for Disease Control and Prevention, syndromic surveillance provides public health officials with a timely system for detecting, understanding, and…

Salmonella is a bacteria (germ) that causes illness with diarrhea, fever and/or stomach cramps.There are many kinds of Salmonella bacteria, causing approximately 1.2 million illnesses, 23,000…

   Latest UpdatesInformation for the General PublicWhat is mpox?What are the symptoms of mpox?How can mpox spread?Are young children at risk for mpox?What do you need to know about…

Physicians/Health Care ProvidersCalifornia, including Orange County, experienced a large increase in pertussis cases in 2010, with numbers in 2011 still being elevated when compared to previous years…

What is mumps?Mumps is a contagious disease caused by the mumps virus.The most commonly known presentation is with pain and swelling around the parotid glands, which are along the jaw line. Other…

To review HIV Planning Council meeting agendas, minutes, and any additional resource please click on the links below. Only Council Agenda and Minutes are posted below. For Agenda and…

Marriage Ceremonies Update: Currently, civil marriage ceremonies are only being performed for couples who obtained their marriage license from the Office of the Orange County Clerk-Recorder…

Shigella are bacteria (germs) that causes illness with diarrhea, fever and/or stomach cramps.There are four kinds (species) of Salmonella bacteria, causing approximately 500,000 illnesses each year…