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Monkeypox (MPX)

Updated: 9/20/22

Contra Costa Health Services, along with the California Department of Public Health (CDPH) and other agencies, are monitoring a growing outbreak of MPX cases in the United States and California. Visit the CDPH MPX tracking page f​or the latest information about confirmed or suspected cases of MPX in the county.

While it is good to stay alert about any emerging public health outbreaks, the current risk of getting MPX in the general public is very low, outside of certain activities that increase the chance of exposure.

Pop-Up MPX Vaccine Clinics
We will be holding mobile MPX vaccine clinics at the locations and times below. People can book an appointment online up to 7 days in advance of the clinic date or come in without an appointment. Walk-ins welcome! First and second doses of Jynneos vaccine available to those eligible.
Thursday, Sept. 22
Club 1220
1220 Pine St. Walnut Creek
9 a.m. – 3 p.m.
Friday, Sept. 23
Rainbow Community Center
2380 Salvio St., Suite 301, Concord
4 p.m. – 8 p.m.
Thursday, Sept. 29
Planned Parenthood
2185 Pacheco Blvd., Concord
9 a.m. – 1 p.m.
Saturday, Oct. 1
Danville Town Manager’s Office
510 La Gonda Way, Danville
9 a.m. – 2 p.m.

MPX is a rare disease that is caused by infection with the MPX virus. It belongs to the same family of viruses as smallpox, although MPX tends to be milder than smallpox. MPX spreads to through close, personal, often skin-to-skin contact, including sex and kissing. The virus can be spread from the time symptoms start until all sores, including scabs, have healed and a fresh layer of skin has formed. This can take several weeks.


MPX symptoms usually start within 2 weeks of exposure to the virus. Initial symptoms are similar to flu (fever, headache, fatigue, swollen lymph nodes), followed by a rash and sores that look similar to herpes sores. The rash or sores may be located on or near the genitals or anus but could also be on other areas like the hands, feet, chest, or face.

  • The sores will go through several stages, including scabs, before healing.
  • The sores can look like pimples or blisters and may be painful or itchy.
  • Sores may be inside the body, including the mouth, vagina, or anus.


  • Avoid intimate and physical contact with anyone who has symptoms
  • Talk openly with sexual partners prior to intimate physical contact
  • Consider covering exposed skin in dense, indoor crowds
  • Don't share bedding, clothing with others
  • Stay aware if traveling to countries where there are outbreaks


Please check with your regular healthcare provider about getting an MPX vaccine. The County is no longer the only provider offering vaccine in Contra Costa. MPX vaccine is also available through Kaiser, La Clinica and Lifelong Medical.

CCH recommends that anyone who has had a potential exposure to MPX or meets one or more of the criteria below get vaccinated.

  • Gay, bisexual, and other men or trans people who have sex with men
  • Sex workers of any sexual orientation or gender identity
  • Persons who had close contact with someone with suspected or confirmed monkeypox
  • People who have had any of the following in the past 6 months:
    • Sex at a commercial sex venue (like a sex club or bathhouse)
    • Sex at an event, venue, or in an area where monkeypox transmission is occurring
  • People whose sexual partner identifies with any of the above scenarios.
  • Anyone who anticipates experiencing any of the above scenarios.

Use this link to schedule an appointment at a Contra Costa Health MPX vaccine clinic. Walk-in service is available as capacity allows.

Second doses of MPX vaccine are available to individuals if it has at least been 28 days since they got their first dose.

Community organizations and other groups can now request a free visit from Contra Costa Health Services' mobile MPX vaccine service through this online form.


There are no treatments specifically for MPX infection. However, MPX and smallpox viruses are genetically similar, which means that antiviral drugs and vaccines developed to protect against smallpox may be used to prevent and treat MPX virus infections.

Antivirals, such as tecovirimat (TPOXX), may be recommended for people who are more likely to get severely ill, like patients with weakened immune systems, and there is a limited supply of TPOXX treatments for eligible patients within Contra Costa County. Most people with MPX recover fully within 2 to 4 weeks without the need for medical treatments.

To access MPX treatments:

  • For patients with Medi-Cal or are uninsured, contact Contra Costa County Health Advice nurse at 887-661-6230
  • For Kaiser patients, follow up with your provider.
  • For patients with Medicare or private insurance, call the BASS ID group at 925-947-2334