Transcription of West Nile Virus and Other Arboviral Diseases
1 West Nile Virus and Other Arboviral Diseases Los Angeles County Epidemiology Report #7. October 4, 2019. This week, 5 new West Nile Virus (WNV) human cases and the first WNV-related fatality were documented by the Los Angeles County Department of Public Health (LAC DPH) (Table 1). All are symptomatic cases with the most recent onset occurring 9/20/19 (Figure 1). Most cases this year reside in the Metro and South Bay regions of the county. The number of infections identified this season has been below the previous 5-year average (Figure 1). However, additional cases are expected to occur through the end of the year. The last onset date in the previous WNV season occurred 12/2/18. The California Department of Public Health (CDPH) has reported 128 human cases and 3 deaths in the state.
2 Nationally, 627 symptomatic human cases and 30 deaths have been reported to the Centers for Disease Control and Prevention. Table 1. Characteristics of WNV Cases, LAC, 2019. Clinical Presentation Demographics Median Number of Asymptomatic WNV Neuroinvasive Neuroinvasive Gender Age Cases1 Donor Fever Disease Diagnosis Hospitalized Deaths M/F (Range). 4 = Encephalitis This 63. Week 5 0 0 5 1 = Meningitis 5 0 2/3 (32-80). 0 = AFP2. 8 = Encephalitis Year 62. Total 14 0 3 11 3 = Meningitis 12 1 7/7 (31 80). 0 = AFP2. 1 Count confirmed by LAC DPH as of 10/3/19. Excludes reports from Long Beach and Pasadena. Totals are provisional and subject to change. 2 Acute Flaccid Paralysis Figure 1. WNV Cases by Week, LAC, 2019. 25. 20 2019.
3 Cases 15. 2014-2018 Average 10. 5. 0. Week of Onset*. *Asymptomatic blood and organ donors listed by date of donation. The first WNV death in LAC has been confirmed for 2019. Table 2. Cities of Residence with Reported WNV Infections The deceased was a resident of the South Bay region LAC, 2019*. with WNV-neuroinvasive infection. Symptom onset was mid-September. Beverly Hills Physicians are encouraged to review mosquito Claremont precautions with their patients, especially those over 50. Hawthorne years of age and/or with chronic medical problems. Inglewood Click here for repellent information La Mirada Lakewood To receive weekly reports email: Acute Lomita Communicable Disease Control (213) 240-7941. Los Angeles Malibu West Hollywood Report mosquito problems!
4 *Excluding Long Beach and Visit or call 2-1-1 to report to your local Pasadena mosquito control district.
