Diseases & Risks

Animal Bites & Concerns

Review how to report an animal bite as well as updates on diseases transmitted by animals.

Chronic Disease

Chronic diseases, including heart disease, stroke, cancer, and diabetes, rank among the most common, costly, and preventable of all health problems throughout the United States.

Coronavirus Information

Disease Fact Sheets

The Snohomish County Health Department Communicable Disease Program investigates certain diseases to find the source of a disease or outbreak in order to stop any ongoing spread of illness. A list of fact sheets has been compiled for easy reference.

Ebola Virus Disease

The Snohomish County Health Department has initiated multiple planning efforts around ebola. You can read more about them on this page.

The Flu

Influenza, more commonly called the flu, is a highly contagious respiratory illness. Flu seasons can be unpredictable and severe. Hospitalizations and deaths related to flu occur every year in Snohomish County, yet less than half of all adults get vaccinated yearly as recommended.

Hepatitis

Hepatitis is inflammation of the liver that can be caused by many things, including viruses, alcohol, and drugs. The most common viruses that attack the liver are hepatitis A, B and C.

HIV / AIDS

Human immunodeficiency virus (HIV) is the virus that causes AIDS (acquired immunodeficiency syndrome). HIV attacks the immune system and, unlike many other viruses, the body cannot rid itself of HIV.

Injection Drug Use

The Snohomish County Health Department offers a number of free services to help people who inject drugs (PWID) and their friends and families.

Heroin & Opioids

Substance use is related to many of the leading causes of death in Snohomish County, particularly when it comes to heroin and opioids. Provided is information that can help the community combat substance abuse.

Lice & Scabies

The Snohomish County Health Department offers resources for the prevention and treatment of these infestations.

Measles

Measles information, information on the MMR vaccine, and current confirmed cases and exposure locations (when applicable).

Mumps

Find information about the Mumps outbreak in Snohomish County and how to recognize it.

Norovirus

Norovirus is a very contagious virus sometimes mistakenly called stomach flu. It is also one possible cause of "food poisoning."

Sexually Transmitted Infections

The Snohomish County Health Department’s goal is to prevent future illness for you and the spread of STIs/STDs to others. Learn about how you can keep yourself safe from STDs, testing and treatment available in the community.

Tuberculosis

Tuberculosis is a bacterial infection that spreads through the air when infected and contagious people talk, sing, cough, or sneeze. It is not spread through casual contact. Review testing information, symptoms and treatment plans provided by the Snohomish County Health Department.

Whooping Cough (Pertussis)

Pertussis, also know as whooping cough, is a contagious respiratory disease that is particularly harmful to babies. Snohomish County was “ground zero” for the Washington State pertussis epidemic of 2012.

Zika Virus

Access information about the Zika Virus and its impact on the Snohomish community.

Mpox