It’s the first evidence of West Nile virus in Nevada County this summer. A dead bird has been found in Grass Valley. The County Health Department says as of June 9th 13 counties have reported West Nile activity, mainly in dead birds and mosquito samples. There has been only one human case in California so far. The Department reminds us that stagnant water left behind from heavy winter rains make good breeding grounds for mosquitoes, so it’s important to eliminate any sources of pooling or collecting water around homes. For people considered at risk, they’re encouraged to stay indoors at dawn and dusk when mosquitoes are most active. And if you must be outdoors, wear long sleeves and pants and use repellent.