After the West Nile virus was detected positive in a woman and three samples of mosquitoes, San Bernardino County Vector Control officials have become more vigilant and are monitoring the cases keenly to check any further spread.

A Fontana woman was examined with the virus on August 9 and also, two chickens were discovered infected with the virus on August 11, near Sierra Avenue and Arrow Highway. On Tuesday, three mosquito samples from Rancho Cucamonga and Ontario detected positive for the virus.

As told by Corwin Porter, Acting Chief of the county's environmental health and code enforcement division, they are watchful for everything and in this time of the year, they are keeping adequate staff so as to detect the areas threatened with West Nile Virus.

The presence of the West Nile virus was found firstly in May and till now, its traces are being discovered and thus the people are advised to be aware, as stated by Brian Reisinger, community outreach coordinator for the district.

The virus is transmitted through infected mosquito bites and it is more prevalent in summer. The illness triggered by the virus shows symptoms such as high fever, headaches, quivering and seizures; milder symptoms include fever, headaches, body aches, nausea and vomiting. But in 80% of the cases, the symptoms do not exhibit, as expressed by the Centers for Disease Control.