There is really no need to panic. WNV has hit New Jersey for quite a while and the news just report like 10 deaths a year. I don't know the exact numbers of deaths, but the health advisors just tell us not to overreact from this news and to follow a list of things to do to minimise the risk for WNV. Like Flyfree said, dumping all standing waters out, wearing bug repellants with DEET, wearing long sleeved shirts (ugh I know) and pants, etc...
If you feel like you have sickness or flu, its good idea to check with doctor anyway no matter if it is just a normal flu or WNV.