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Health Advisory: Increased Risk of Severe West Nile Virus and Other Arboviral Diseases in Patients Receiving B Cell-Depleting or B Cell-Modulating Medications

HEALTH ALERT NETWORK Health District 4 Advisory for Healthcare Providers August 21, 2026 Key Actions for Healthcare Providers Educate patients receiving B cell-depleting or B cell-modulating therapies (particularly anti-CD20 monoclonal antibodies) about their increased risk for severe arboviral disease and the importance of mosquito and tick bite prevention. Maintain a high index of suspicion for…

JUL 13

Health Advisory: Increase in Cyclosporiasis Cases Reported in Multiple States

HEALTH ALERT NETWORK Health District 4 Advisory for Healthcare Providers July 13, 2026 Health Advisory: Increase in Cyclosporiasis Cases Reported in Multiple States Key Message A large multistate outbreak of cyclosporiasis is ongoing, with more than 1,500 cases reported in Michigan and increases reported in several other…

JUN 16

Health Advisory: Consider Avian Influenza A (H5N1) in Patients with Dairy Cattle or Poultry Exposure

HEALTH ALERT NETWORK – Health District 4 Advisory for Healthcare Providers: Consider Avian Influenza A (H5N1) in Patients with Dairy Cattle or Poultry Exposure Key Messages Local Situation: Avian Influenza A (H5N1) has been confirmed in over 80 Idaho dairy premises, including 12 in District 4 currently under ISDA quarantine. Clinical Suspicion: Consider H5N1 infection in…

JUN 09

Health Advisory: New World Screwworm Detected in the United States

HEALTH ALERT NETWORK Health District 4 Advisory for Healthcare Providers June 9, 2026 Health Advisory: New World Screwworm Detected in the United States As of June 8, 2026, New World Screwworm (NWS), Cochliomyia hominivorax, has been confirmed in four livestock in Texas and one dog in New Mexico. NWS was eradicated from the United States…

MAY 22

Idaho Health Advisory: Ebola Outbreak Update – International Situation Awareness

May 22, 2026 Key Points for Providers Ebola (Bundibugyo virus) outbreak is reported in DRC and Uganda Low likelihood of U.S. importation at this time Evaluate patients with compatible illness and recent travel/exposure history (=21 days) Early recognition and isolation remain key, though risk is minimal An outbreak of Bundibugyo virus disease (BVD), caused…

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Health Alert Network

The Health Alert Network (HAN) is an essential resource for communication between CDH and health care providers, schools, laboratories, pharmacies, and other medical service providers.

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Public Records & Media Requests

The Central District Health Public Information team works with media and the public to assist with public health-related information and to answer questions in a timely, accurate and helpful manner.

To request data or public information, please submit a public records request.
To request the release of medical records, please complete and return a Release of Information (ROI) form.

For questions or media inquiries, contact our Communications Team:

Communications/Marketing Manager – 208-327-8639 | sgeanopulos@cdh.idaho.gov
Brand Strategist/Social Media Contact – 208-321-2246 | zhill@cdh.idaho.gov
PIO Specialist – 208-327-8525 | tyoung@cdh.idaho.gov

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