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Health Alerts/Updates

Click here for the latest information regarding Influenza and Infection Prevention in Dallas County.

07/30/15 DCHHS Health Advisory: Increase in Cyclospora Infections
Since July 8, 2015, 14 confirmed Cyclospora infections have been reported to Dallas County Health and Human Services (DCHHS).

07/21/15 DCHHS Health Advisory (#2): West Nile Virus
Dallas County Health and Human Services (DCHHS) is reporting the first human case of West Nile Virus (WNV) infection confirmed in Dallas County for this season. This resident of zip code 75217 was diagnosed with West Nile Fever (WNF).

09/30/2014 DCHHS Health Advisory (#4): Ebola Virus Disease
A patient hospitalized in Dallas County was confirmed to have Ebola infection this afternoon, through testing performed at the CDC and state laboratories. This is the first imported case of Ebola to have been diagnosed in the United States.

09/25/14 DCHHS Health Advisory (2): Enterovirus D68
In recent weeks, enterovirus D68 (EV-D68) infections among children have continued to be identified in many states, now including Texas.

09/25/14 DCHHS Health Advisory: Legionella
Dallas County Health and Human Services (DCHHS) is noting an increase in cases of Legionnaires’ disease, which is a serious form of pneumonia that can be acquired from inhalation of aerosols or aspiration of water containing Legionella bacteria.

09/13/2014 DCHHS Epidemiologic Summary: West Nile Surveillance Report

09/10/14 DCHHS Health Advisory Update: Enterovirus D68
Increases in severe respiratory illness from enterovirus D68 (EV-D68) among children have been confirmed recently in several states1 and are currently suspected in additional states. No EV-D68 cases have yet been confirmed in Texas.

08/27/14 DCHHS Health Advisory Update: Ebola Testing
Dallas County Health & Human Services has updated the algorithm to assist with testing and monitoring of patients with suspected Ebola Virus Disease (EVD). DCHHS has also provided physicians with a new "Screening Questionnaire" tool for exposure assessment. This questionnaire can be found on the second page of the linked PDF.

The algorithm and questionnaire were developed as a tools for area clinicians who may be evaluating patients with compatible risk factors and symptoms. Please note that this interim guidance is subject to change due to the evolving situation. This update replaces previous versions from 8/7/14 and 8/11/14, and incorporates new CDC guidance which has been released.

For more information, including recently updated guidance documents, visit the Centers for Disease Control and Prevention's website.

07/23/14 DCHHS Health Advisory: Measles
A case of confirmed measles was announced today of an adult Tarrant County resident.

07/22/14 DCHHS Health Advisory: Chikungunya
Dallas County Health and Human Services (DCHHS) has confirmed Dallas County’s first travel-associated human case of chikungunya for 2014.

07/18/14 DCHHS Health Advisory: Increase in Cyclospora Infections
Since July 8, 2014, 10 cases of Cyclospora infection have been reported to Dallas County Health and Human Services (DCHHS).

07/18/14 DCHHS Health Advisory Update (2): West Nile Virus
Dallas County Health and Human Services (DCHHS) is reporting the first 2 human cases of West Nile Virus (WNV) infection confirmed in Dallas County for this season.

05/06/14 DCHHS Health Advisory: Middle East Respiratory Syndrome Coronavirus (MERS-CoV)
Because of increases of Middle East Respiratory Syndrome Coronavirus (MERS-CoV) cases reported from Saudi Arabia and UAE since mid-March of 2014, clinicians are being requested to increase their index of suspicion for MERS-CoV in travelers to the Arabian Peninsula and neighboring countries. Read more about the health advisories from DCHHS and CDC.

11/06/13 DCHHS Press Release: 16th Human Case of WNV
DCHHS announced the sixteenth human West Nile virus case in Dallas County for the 2013 season.

05/16/2013 DCHHS Press Release: Passage of Texas Senate Bill 186 Adds Another Mosquito Abatement Tool for Cities

West Nile Virus Resources

06/07/2013 Guide for Epidemiologic Analysis of West Nile Virus Mosquito Data in Dallas County

02/05/2013 Epi-Aid 2012-069 Final Report: Evaluation of the impact of adult mosquito control during a West Nile virus outbreak in Dallas, Tarrant, Denton, and Collin Counties — Texas, 2012

JAMA WNV Article by Dr. Robert Haley - Controlling Urban Epidemics of West Nile Virus Infection 8-24-2012


DCMS physician Dan McCoy, MD, interviewed DCMS past president Don Read, MD, who is a West Nile Virus survivor.


The Dallas County Medical Society considered these resources in determining its position and recommendation to Dallas County and Dallas city officials in support of aerial spraying.

DCMS physicians present comments at Aug. 14 meeting of Dallas County Commissioners Court

DCMS Physician Answers West Nile Questions

Frequently Asked Questions About West Nile and Aerial Spraying

Common symptoms of West Nile Virus infections.

Various media links and resources featuring Dallas County Medical Society's stance on aerial spraying in Dallas County.

Research Paper: Efficacy of Resmethrin Aerosols Applied from the Road for Suppressing Culex Vectors of West Nile Virus

Abstract: Nontarget Effects of the Mosquito Adulticide Pyrethrin Applied Aerially During a West Nile Virus Outbreak in an Urban California Environment

WNV Web sites

The Centers for Disease Control and Prevention (CDC): Guidelines for Surveillance, Prevention and Control

The Centers for Disease Control and Prevention (CDC): West Nile Virus: Information and Guidance for Clinicians

US Environmental Protection Agency (EPA) Mosquito Control and West Nile Virus

American Mosquito Control Association

Sacramento-Yolo Mosquito and Vector Control District

Department of Land Resources and Environmental Sciences, Montana State University

Epidemic/Epizootic West Nile Virus in the United States: Guidelines for Surveillance, Prevention and Control

Before the Swarm: Guidelines for the Emergency Management of Mosquito-Borne Disease Outbreaks

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WNV Journals, Studies, and Other Documents

American Journal of Epidemiology: The Epidemiology of St. Louis Encephalitis in Dallas, Texas 1966 (Pages 1-15)

Public Health Reports: Economic Cost of St. Louis Encephalitis Epidemic in Dallas, Texas, 1966 (Pages 860-866)

Morbidity and Mortality Weekly Report: Human Exposure to Mosquito-Control Pesticide- Mississippi, North Carolina, and Virginia, 2002-2003 (Pages 530-535)

Emerging Infectious Diseases: Efficacy of Aerial Spraying of Mosquito Adulticide in Reducing Incidence of West Nile Virus, California, 2005 (Pages 747-754)

Journal of Medical Entomology: Impact of Aerial Spraying of Pyrethrin Insecticide on Culex pipiens and Culex tarsalis (Diptera:Culicidae) Abundance and West Nile Virus Infection Rates in an Urban/ Suburban Area of Sacramento County, California (Pages 751-757)

Emerging Infectious Diseases: Economic Cost Analysis of West Nile Virus Outbreak, Sacramento County, California, USA, 2005 (Pages 480-486)

Journal of the American Mosquito Control Association: Community Aerial Mosquito Control and Naled Exposure (Pages 42-46)

Journal of the American Mosquito Control Association: Evaluation of Efficacy and Human Health Risk of Aerial Ultra-Low Volume Applications of Pyrethrins and Piperonyl Butoxide for Adult Mosquito Management in Response to West Nile Virus Activity in Sacramento County, Calif. (Pages 57-66)

Environmental Toxicology and Chemistry: Environmental Concentrations, Fate and Risk Assessment of Pyrethrins and Piperonyl Butoxide After Aerial Ultra-Low Volume Applications for Adult Mosquito Management

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Personal Preparedness Guide for Patients

DCMS Community Emergency Response Committee

Disaster and Pandemic Preparedness

In a disaster or public health emergency, coordination among local public health departments, the medical community, and emergency management is vital. When a disaster or public health emergency strikes Dallas County, hospitals, physicians, and other health care agencies coordinate their responses through the Dallas Medical Operations Center (DMOC). DMOC is the official centralized coordinator of all medical responses in the event of a regional emergency. DMOC enables all responding agencies at the regional, state, and federal levels to report and share information regarding resources, supplies, volunteers and critical needs. By coordinating communications with all Dallas area physicians, DCMS is a key participant in DMOC by distributing up-to-date and accurate details of the emergency through web site, faxes, email, and phone. DCMS also assists the local Medical Reserve Corps in recruiting and scheduling physician volunteers to be deployed at emergency shelters.

DCMS needs your help to build our team of volunteer physicians that will respond during a disaster or public health emergency. Only physicians who have signed up to volunteer with DCMS/Medical Reserve Corps will be allowed to volunteer at non-hospital official sites set up to assist those in need.

If you are interested in serving as a emergency response physician volunteer, complete this form and fax back to 214-946-5805 or contact Connie Webster, senior vice president of operations at connie@dallas-cms.org or 214-413-1426.

DCMS and our community leaders greatly appreciate your willingness to serve in this vital capacity.

To contact us:

Connie Webster
DCMS Senior V.P. of Operations
214-413-1426 (ofc)

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