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Breaking News: Health Advisory for Contra Costa County

Last updated: November 16, 2018, 9:52 am

Poor air quality in Contra Costa is expected to continue through the weekend due to the Camp Fire in Butte County. Stay indoors when possible and keep doors and windows closed. Avoid prolonged outdoor activity. Masks are not a substitute for staying indoors. Seek medical attention if you experience symptoms such as difficulty breathing, persistent coughing, wheezing, chest tightness, heart palpitations, nausea, fatigue or light-headedness. Visit for air quality information. Visit for current air quality conditions in your zip code. Visit for smoke-related health information.

Mosquito-borne Illnesses

Some mosquitoes carry diseases that infect people when they bite us. The diseases can vary by species – there are different kinds of mosquito – and by region.

In Contra Costa County, the only disease that mosquitoes are known to give humans is West Nile Virus.

The best way to avoid mosquito-borne illnesses is to avoid bites.

  • Use insect repellant
  • Cover up – wear long-sleeved shirts and pants, especially at dawn and dusk
  • Use screens on windows or doors when it gets warm, or just use air conditioning

Contra Costa residents can also help to reduce the local mosquito population.

  • Keep mosquitoes from breeding in your home or garden
  • Report neglected (green) swimming pools, ponds or troughs of stagnant water
  • Get help if you notice unusual mosquito activity

The Mosquito & Vector Control District offers free services and advice about mosquitoes at or 925-771-6196.

Dead Birds