Miami-Dade County officials are monitoring four zones in the Miami area where the Zika virus spread through local mosquitoes.
In a statement Friday, officials said an enhanced mosquito surveillance network includes more than 130 traps in the Wynwood, Little River and Miami Beach zones, as well as countywide. The traps provide data on mosquito activity.
Crews also are applying preventative pesticide treatments.
Health officials declared all four zones clear of continuing Zika infections by December, though isolated infections have continued.
Last week, announced the state's first locally acquired Zika infection of 2017.
Officials said screening after a blood donation in January showed evidence of a past Zika infection. The health department said the patient was exposed to Zika in Miami-Dade County and likely contracted it in 2016.
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