West Nile virus

Update: Vector control discusses spread of West Nile virus

Placer County authorities are warning that the West Nile virus that’s been infecting birds and chickens in the area for months has now spread to humans.  Three newly ...

West Nile positive bird found in Auburn

A dead bird found in Auburn tested positive for West Nile virus. The county’s Mosquito and Vector Control District announced Friday that a western scrub jay tested positive for ...

Mosquito samples hit season high for West Nile

Eight new mosquito samples tested positive for West Nile virus this week along the western Placer County border. This is the highest number of positive samples in one week since ...

West Nile virus activity increasing in Placer

Four additional mosquito samples in Placer County have tested positive for West Nile virus in the past two weeks. Most of the cases are occuring on the western border of the count ...

Roseville resident tests positive for West Nile

Placer County health officials announced Monday that a Roseville resident has tested positive for West Nile virus, making it the first human case of the illness in the county this ...

West Nile spraying Friday evening

Seven more mosquito samples tested positive for West Nile virus in Placer County this week, which means that another aerial spraying is due for the area this evening, officials sai ...

Warm weather brings out mosquitos

With the recent warm weather, The Placer Mosquito and Vector Control District has been seeing an increase in mosquito activity. “This time of year, many residents who live at l ...

Roseville and Loomis resident contract West Nile virus

A 31-year-old Roseville man and a 54-year-old Loomis man have contracted West Nile virus, two of Placer County’s first reported human cases this year, according to Placer County ...

More mosquito pools test positive for West Nile virus

Two additional mosquito pools in Placer County have tested positive for West Nile virus, a reminder, officials say, that residents should take action to protect themselves against ...