<s>[INST] West Nile virus (WNV) is a viral disease transmitted primarily through the bite of infected mosquitoes. In 2013, the New York City (NYC) Department of Health and Mental Hygiene (DOHMH) conducted a serosurvey to assess the seroprevalence of WNV antibodies among NYC residents. The objective of the study is to determine the seroprevalence rate of WNV antibodies among the participants enrolled in the survey. A total of 799 participants were enrolled in the study. The serum samples of 56 participants were tested positive for WNV antibodies. What is the seroprevalence rate of WNV antibodies among the participants in the survey?[/INST]