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AZ first probable WNV/SLE case

Posted By Administration, Friday, August 24, 2018

Society PA,

With monsoon season, mosquito activity is increased in Arizona. The year’s first probable West Nile virus (WNV)/St. Louis encephalitis virus (SLE) case in Arizona is under investigation.  Both of these flaviviruses are endemic in Arizona and have been detected in collected Culex mosquitos.

WNV and SLE are most commonly spread to people by the bite of an infected mosquito. In 2017, Arizona had 110 reported cases and 8 fatalities of WNV and 6 cases of SLE.

Healthcare providers are encouraged to consider WNV and SLE in patients presenting with:
  • Nonspecific signs of fever, headache, myalgia, arthralgia, rash, and weakness.
  • Meningitis, encephalitis, paralysis, or other acute signs of central or peripheral neurologic dysfunction.

The majority of WNV and SLE infections are asymptomatic; however, infections in the elderly and among immunocompromised individuals can result in neuroinvasive diseases that can be fatal.

Arizona clinicians should test serologically for both WNV and SLE if there is clinical suspicion for these mosquito-borne illnesses, with serum or cerebrospinal fluid collected after the first week from symptom onset. Providers should advise patients to prevent mosquito bites and they should contact local public health (https://www.azdhs.gov/preparedness/epidemiology-disease-control/index.php#resources-county ) regarding suspected WNV or SLE illnesses or questions on diagnostic testing.

 

For more information, visit:

https://www.azdhs.gov/preparedness/epidemiology-disease-control/mosquito-borne/index.php

https://www.azdhs.gov/preparedness/epidemiology-disease-control/index.php#idaz https://www.cdc.gov/westnile/healthcareproviders/index.html

https://www.cdc.gov/sle/technical/symptoms.html

Thank you,
Arizona Health Alert Network

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Susanna Kapoor says...
Posted Saturday, August 25, 2018
Appreciate the update!
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