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Public Health
Press Release
Bonnie Davies
Director of Nursing

251 E. Webster St
Colusa, CA  95932

Ph: (530) 458-0380
Fx: (530) 458-4136

Monday - Friday
8:00 am - 4:30 pm

First Confirmed Case of West Nile Virus in Colusa County for 2016

August 18, 2016                                                                Contact:  Gregory Burt MD
For immediate release                                                      Health Officer          
(530) 458-0380

Colusa County has reported its’ first confirmed human case of West Nile Virus for 2016.  The case was the more severe neuro-invasive form of the illness that causes meningitis.  The patient, an adult, is recovering at home.  The patient resides outside of the Colusa Mosquito Abatement District.

Most people (70-80%) who become infected with West Nile virus do not develop any symptoms. About 1 in 5 people who are infected will develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea, or rash. Less than 1% of people who are infected will develop serious illness.

Although Colusa County reports few WNV cases each year, 2 cases in 2015 and 3 in 2014, this does serve as a reminder that residents should take simple precautions to avoid exposure to mosquitos.  The 4 “D”s is an easy way to remember how to prevent mosquito bites.

1. DEET – Apply insect repellent containing DEET, picaradin, oil of lemon eucalyptus or IR3535 according to label instructions. DEET can be used safely on infants and children two months of age and older. 

2. DAWN AND DUSK - Mosquitoes bite in the early morning and evening so it is important to wear proper clothing and use repellent if outside during these times.

3. DOORS AND WINDOWS - Make sure doors and windows have tight-fitting screens and are free of tears or holes, to keep out mosquitoes.

4. DRAIN - Mosquitoes lay their eggs on standing water. Eliminate or drain sources of standing water such as flower pots, old car tires, bird baths, pet bowls and buckets.  Report swimming pools that are not being properly maintained.

California's West Nile virus website ( includes the latest information on West Nile virus activity in the state. Californians are encouraged to report dead birds on the website or by calling toll-free 1-877-WNV-BIRD (968-2473)