Officials have confirmed the presence of West Nile virus in some mosquitoes in Morris County.

The county Mosquito Extermination Commission says the virus was found in mosquitoes tested in Riverdale, Parsippany, Mine Hill, Dover, Morris Plains and Rockaway.

Commission superintendent Kris McMorland tells The Daily Record of Parsippany  the number is nothing compared to last year when infected mosquitoes were found in 70 pools.

The commission has sprayed to kill the insects.

Mosquitoes get the virus from feeding on infected birds and then spread it to people they bite. The elderly and those with weakened immune systems are most at risk of serious health complications.

Five people died from West Nile virus in the state last year.

(Copyright 2013 The Associated Press. All Rights Reserved)