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Public Safety

Goal 1: Utilize Targeted Initiatives and Industry
Best Practices and Policies to Foster a Safe Environment
Objective 2: Protect Public Well‐being
Project Performance Measure(s) City Service Team (Department)
Core Mosquito Surveillance Set a surveillance trap within a quarter mile Economic Development and
PS of a confirmed human West Nile Virus case Capital Investment (Planning)
1.2.1 within the next trap setting cycle
Summary:

West Nile Virus (WNV) is an endemic public health Target Target FY FY
threat to our community. Additionally, North Texas is Measure 2018 2019
home to many species of mosquitos that are known to Actual YTD
transmit a variety of mosquito borne illnesses such as Respond to complaints 90% 80% 84%
Zika, ChikV, Saint Louis Encephalitis and Dengue Fever. within one business
day
The City of Arlington’s Integrated Mosquito Set a surveillance trap 100% 100% NA
Management Program (IMMP) is designed to reduce the within a quarter mile of
threat of all mosquito borne illnesses through a confirmed human
preparedness, public education, surveillance and West Nile Virus case
targeted risk mitigation. As with any IMMP, preventing within the next trap
adult mosquitos from emerging is always the primary setting cycle upon
focus; however, targeted ground spraying of adult notification from
mosquitos is also a critical element to prevent the Health Authority
spread of disease. Trapping is the surveillance method
used to quantify human risk. Fifteen traps are set,
collected and prepared for analysis each week (April
through November). When a trap results in a positive
WNV carrying mosquito, targeted ground
spraying/adulticide is conducted in a half‐mile area
surrounding the location of the trap. This response plan
involves immediate coordination with several COA
Departments and the third‐party contractor who
conducts the spray mission.

Update:
Health staff continued to perform surveillance activities, The results demonstrated that our local mosquito population
setting traps weekly. There were no positive traps or is still extremely vulnerable to the type of pesticide applied
human cases of WNV during fourth quarter. Health during targeted ground spraying missions when exposed at
received 39 citizen complaints and larvicided 38 the specified application rate.
locations. Public Works dispensed BTI dunks into over
1,400 storm drains and inlets during their routine
maintenance servicing. Our third‐party contactor
applied larvicide at 35 locations, provided on‐site field
training/consultation services, and reported results of
bottle bioassay resistance testing. Resistance testing is a
critical component and CDC recommended element of
an Integrated Mosquito Management Program which
tracks the efficacy of our adulticiding efforts.

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