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A total of four mosquito pools have now tested positive for West Nile Virus in Holt County, near O'Neill.

West Nile Virus is still circulating in the environment. Residents, not only in Holt County, but across Nebraska, should continue to take precautions to protect themselves until the first hard freeze, according to Elizabeth Parks, disease surveillance coordinator at North Central District Health Department.

Precautions include:

• Limit time spent outdoors at dusk and down when mosquitoes are most active.

• Wear long-sleeved shirts and pants if outdoors at dusk or dawn.

• Apply a...