Weather permitting, the NYC Department of Health and Mental Hygiene will conduct aerial spraying for mosquitoes via a low-flying helicopter to help prevent West Nile Virus between 6:00 AM and 7:00 PM on 7/17, 7/18, and 7/21 with alternate spray dates of 7/18, 7/21, and 7/22 in the marshlands near the following zip codes in Staten Island, Queens, and The Bronx: 10303, 10306, 10308, 10309, 10311, 10314, 11354, 11356, 11357, 11362, 11363, 10464, 10475, 11691, and 11692. Go to http://www.nyc.gov/html/doh/html/environmental/wnv-spray.shtml or call 311 for details.