https://www.who.int/emergencies/disease-outbreak-news/item/2025-DON556
https://ad.easa.europa.eu/sib-docs/page-1
https://www.easa.europa.eu/en/domains/air-operations/czibs
https://www.icao.int/safety/CAPSCA/Pages/Electronic-Bulletins-and-State-Letters.aspx