Published: Aug 27, 2014 11:21 AM EDT

MELBOURNE, Fla.- Health officials in Brevard County say several sentinel chickens and a horse have tested positive for the antibodies to West Nile virus.
    
County spokesman Don Walker told Florida Today (http://on.flatoday.com/1phmP0U ) chickens had tested positive at four of 11 sites as of Monday.
    
Walker says that while the numbers aren't cause for alarm, residents should take precautions to avoid mosquitoes.
    
West Nile virus can cause encephalitis which is a potentially fatal inflammation of the brain. Health officials say senior citizens and those with compromised immune systems are most vulnerable.
    
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Information from: Florida Today (Melbourne, Fla.), http://www.floridatoday.com

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