Japan has confirmed its first HPAI (H5) outbreak of 2026 at a breeding chicken farm in Miyazaki Prefecture https://beaconbio.org/en/report/?reportid=dc4e0335-cdb7-49ee-af9b-7f24d92915a1&eventid=0b186d94-8ca7-4689-9d87-6ed4baf5177b&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

United States: Measles – Over 2000 Cases Mark Highest Annual Total in Over 30 Years Read more at: https://beaconbio.org/en/report/?reportid=6eee590f-fdbf-40db-84d6-1f68a99dae0c&eventid=2f15d768-f7ee-48ec-b675-02ad2862880f&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

California, USA: Hand, Foot, and Mouth Disease – Over 100 Cases and 38 Cluster Events in Children Under Five https://beaconbio.org/en/report/?reportid=029087d8-228b-414a-b996-fbd611b911fa&eventid=dd3aefac-7d62-4f20-8a23-b5ea209059f9&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Brucellosis was confirmed in a pregnant cow from Gallatin County, marking Montana’s second surveillance-detected case in 2025 https://beaconbio.org/en/report/?reportid=86d59249-86c3-475f-a2ca-9e31c978a433&eventid=0bb656f3-d719-416a-ad5c-d86af9b2ed38&utm_source=bluesky&utm_medium=social

HPAI outbreak in commercial poultry in Warhem, northern France, with cross-border implications near Belgium https://beaconbio.org/en/report/?reportid=61821273-b9b9-4351-b4f6-522760d8c971&eventid=08678d44-83a4-435a-ba38-fa3d4c627231&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Indore, Madhya Pradesh, India: Waterborne Diarrheal Outbreak – Up to Seven Deaths and Over 100 Hospitalizations from Contaminated Municipal Water Supply https://beaconbio.org/en/report/?reportid=ae2288b2-8f02-44cc-87e9-af15af5a0818&eventid=8e8e7f29-426f-4bd8-bcdc-9608e0bd8ff0&utm_source=bluesky

Japan: Highly Pathogenic Avian Influenza H5N1, Poultry – First Capital Region Outbreak of Season Read more at: https://beaconbio.org/en/report/?reportid=c0e76789-cb17-4e5b-ae71-c0bf054d3ad3&eventid=0b186d94-8ca7-4689-9d87-6ed4baf5177b&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Malawi: Cholera Outbreak Declared with 11 Cases Across Five Districts at Onset of Rainy Season Read more at: https://beaconbio.org/en/report/?reportid=bd230c3e-dd28-4c11-9e5e-763d43b81ab0&eventid=325d4974-5d60-4af9-b5a7-0b1635a6d6dc&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Madagascar: First Mpox Outbreak – Five Cases in Urban Cluster Read more at: https://beaconbio.org/en/report/?reportid=f8cbbfa6-9755-4311-bb0e-79c2cbae5fb9&eventid=9ed0b3c0-e94d-4304-9d0b-767bc6fb9549&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Colombia: Yellow Fever Outbreak – 118 Cases and 49 Deaths in 2025 Mark Fivefold Increase Over 2024 Read more at: https://beaconbio.org/en/report/?reportid=2fd1077a-6c92-45d2-906a-42a37bff14d6&eventid=15ccb6b5-d5a0-449e-876c-b0b333c7e228&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

United States: Whooping Cough – Nearly 28 000 Cases in 2025 Amid Declining Vaccination Coverage Read more at: https://beaconbio.org/en/report/?reportid=2b8de988-8e5a-4ef6-922b-8e56bfa41169&eventid=3c76f11b-6228-45ee-b634-92bf6aab599e&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

United States: Tetanus Cases Reach Decade High Amid Declining Vaccination Read more at: https://beaconbio.org/en/report/?reportid=6fc71bb2-59b2-4adc-87a0-bfc74f8fc571&eventid=c5b4e849-9b84-46d9-a2a4-9abd6a523935&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

More than anything else, we have gained the trust of clinicians, public health workers & all of you! For 2026, my wish is that we keep hearing from you! Your input, your tips, your use of our reports in your work, makes all the hard work worth it! It is what makes BEACON a true global public good.

Leveraging LLMs and incredibly talented, committed teams of humans across multiple teams as well as subject matter experts and outbreak analysts who bring their analyses and decades of experience to every post we publish.

Out today in @jidjournal.bsky.social, we share our experiences on @beaconbio.bsky.social, based at @buceid.bsky.social w partners @bucds.bsky.social @bostonchildrens.bsky.social w users in 170 countries & reports so far on over 600 outbreaks across 200 countries. academic.oup.com/jid/article/...

Vietnam: Invasive Meningococcal Disease – Surge with Emergence of High-Mortality Serogroup W Read more at: https://beaconbio.org/en/report/?reportid=5a04ee9d-da8d-4447-8477-f519409fd717&eventid=cc76a00c-3138-4d02-8b7e-cfb07d4db966&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Germany: Norovirus GII.17 Variant Drives Early, Severe Gastroenteritis Season with Over 5300 Cases Read more at: https://beaconbio.org/en/report/?reportid=4aaf0850-d96b-469e-8f0d-8b4c252a2912&eventid=a66945b7-cfb2-494b-9abe-33ce458d8a52&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Burundi: Cholera Outbreak Among Congolese Refugees at Rumonge Camp – Eight Deaths and Critical Sanitation Failure https://beaconbio.org/en/report/?reportid=3ef72753-41aa-49dc-9a7f-907d3b2a6f77&eventid=a66945b7-cfb2-494b-9abe-33ce458d8a52&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Bangladesh: Dengue – Year-Round Transmission Continues with 102 562 Cases and 412 Deaths in 2025 Read more at: https://beaconbio.org/en/report/?reportid=7d281772-eac6-4dd4-a6b6-547d88f0f228&eventid=f6578d2b-0872-4bb1-913b-9d586512e00f&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Russia: Hemorrhagic fever with renal syndrome – seasonal increase with unusual urban predominance Read more at: https://beaconbio.org/en/report/?reportid=6f26a852-4b24-4c74-bf5c-766c8d74e280&eventid=acc88852-9f37-4dfb-bbc5-b84b70e1a1a9&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Mexico reports 5741 confirmed measles cases and 24 deaths in 2025, threatening loss of measles elimination status https://beaconbio.org/en/report/?reportid=a1c3ed25-872c-46a7-ad46-83d52ee62dc2&eventid=969c949e-a3d9-45df-9295-e37d92346030&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Record-breaking influenza A cases in New York State, USA, with 71 123 cases reported in single week Read more at: https://beaconbio.org/en/report/?reportid=91806ec6-f7d4-44f9-9348-94dfb7e0141f&eventid=acc88852-9f37-4dfb-bbc5-b84b70e1a1a9&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Dengue cases in Brazil drop by more than 70% in 2025; Single-dose vaccine scheduled for 2026 rollout Read more at: https://beaconbio.org/en/report/?reportid=0db187f9-42b7-40ad-9530-7e094289df17&eventid=4a4130b0-6a6c-4f10-9859-e2297a985d27&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Quebec, Canada: Measles Outbreak Reaches Eight Cases Across Multiple Regions Read more at: https://beaconbio.org/en/report/?reportid=74269028-1162-4e76-89b0-33393bf959d2&eventid=605f6ae6-8472-4da2-ac7c-58926a6f4d07&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

WHO global update on MERS-CoV: nine cases reported from June through December 2025 including seven cases in Saudi Arabia and two imported cases in France https://beaconbio.org/en/report/?reportid=5607245a-3d71-4fcc-a960-e226366670f0&eventid=d8e57333-2651-4d40-8ccb-469bbff7fc0f&utm_source=bluesky

Sustained transmission of Diphtheria in Mali with 536 cases and 32 deaths Read more at: https://beaconbio.org/en/report/?reportid=66c7ba86-51ac-4005-a6cf-1aa86d5f46e7&eventid=9557a9fc-f8e4-4e1e-816b-eb50538de896&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

HPAI (H5N1) detected in a backyard flock in Cuiabá, Mato Grosso, Brazil Read more at: https://beaconbio.org/en/report/?reportid=cde33425-45a6-4da8-a428-73bce1491d3c&eventid=3a3b130d-bcd7-458e-bf6b-21f81d15ffbb&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Chad declares end of cholera outbreak; cumulative totals reached 2979 cases and 167 deaths Read more at: https://beaconbio.org/en/report/?reportid=9de4b636-0099-4b46-9ca0-e39bb5062c52&eventid=6de45634-fd7a-4170-b266-07837a468d2b&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

First detections of autochthonous influenza A(H3N2) subclass K (J.2.4.1 variant) in Buenos Aires City and Santa Cruz Province, Argentina https://beaconbio.org/en/report/?reportid=d2b577dc-d969-43cf-8c98-ec0010864e0f&eventid=00139ed6-7e16-4c15-950d-cce233eadf15&utm_source=bluesky&utm_medium=social

Leptospirosis in French Guiana: 34 cases reported in first year of mandatory surveillance Read more at: https://beaconbio.org/en/report/?reportid=fc694006-178b-4092-94ab-78b4cf08a116&eventid=85496f3d-0831-4cf0-a0a0-fb73a5a04f85&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Update on human New World screwworm infections in Mexico: cases increase to 106 with spread to urban areas https://beaconbio.org/en/report/?reportid=0be23c5c-42e7-4b3b-83a4-5d318253cb8b&eventid=7a1ae0cb-6d86-4ea3-95cc-c1c141b3f696&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Request for information: Three H9N2 avian influenza cases involving two children and one adult in Guangdong, Guangxi, and Hubei provinces, China; RFI on symptoms, clinical course, and exposures. https://beaconbio.org/en/report/?reportid=1acbe02f-aa27-4f51-9940-9ae7e8e1fe50&utm_source=bluesky

Haemophilus influenzae type b cluster among unhoused adults in Alberta, Canada Read more at: https://beaconbio.org/en/report/?reportid=8cee957f-48cc-49ad-b196-ae37759f952b&eventid=828d82ee-f992-4e4e-a1b2-a83eba9ac9d8&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

First detections of autochthonous influenza A(H3N2) subclass K (J.2.4.1 variant) in La Paz and El Alto, Bolivia https://beaconbio.org/en/report/?reportid=82a1aa52-2b0e-4dcd-80a2-eee084e81e7c&eventid=11117a80-cf4a-438d-9136-bb660e6b677f&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

First rabid dog confirmed in Chicago in more than three decades, Illinois, USA Read more at: https://beaconbio.org/en/report/?reportid=770127cd-1ef9-48bf-a848-5d4debe1b540&eventid=1a182de8-04e5-450c-8d66-5dc49010b31e&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

United States: Multi-state Salmonella outbreak with suspected link to raw oysters Read more at: https://beaconbio.org/en/report/?reportid=073595ad-7dd5-45aa-b75a-e9bf6e545477&eventid=6a50eced-5b6d-4a08-b25d-b45132969687&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

First detection of influenza A (H3N2) subclade K in Colombia - imported case with mild symptoms Read more at: https://beaconbio.org/en/report/?reportid=3b1a763e-e01b-49ca-9e58-cc5eafb5cb96&eventid=0e4d7803-b9c3-4c3b-bd45-3feaa25e81fd&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Suspected foodborne illnesses in Ho Chi Minh City, Viet Nam: 102 cases linked to sandwich consumption amid recent similar incidents https://beaconbio.org/en/report/?reportid=c8767b50-b59d-46e9-879b-6c6714dabcd7&eventid=c7086ce2-01fb-4106-bf08-9b270dfb1cc3&utm_source=bluesky&utm_medium=social

Cholera cases in Africa have more than doubled to over 310 000 in 2025 Read more at: https://beaconbio.org/en/report/?reportid=d28e85b0-4839-4f48-8122-02042006ae5f&eventid=d99bcfb2-44ed-4f2c-b3de-d970dbe31849&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

A pleasure to talk to Oliver Morgan, head of the @who.int pandemic hub. We discuss #AI in public health, broadly, and focus on @beaconbio.bsky.social run by @buceid.bsky.social in partnership with @buhaririinstitute.bsky.social and @bostonchildrens.bsky.social (see tinyurl.com/bdfhwtuf).

Follow-up on foodborne illness outbreak linked to sandwiches in Quảng Ngãi, Vietnam, with more than 200 cases: multiple pathogens isolated from food and clinical samples https://beaconbio.org/en/report/?reportid=a537b7f9-c653-4e0a-ad3c-966d33b446d9&utm_source=bluesky

Infection from HPAI (H5N1) in a domestic, immunocompromised dog following wild waterfowl consumption in Alberta, Canada https://beaconbio.org/en/report/?reportid=32c67273-940a-43eb-a701-a9fa1ee01bf9&eventid=d45b1fda-448a-44a0-826a-8628e29733d9&utm_source=bluesky&utm_medium=social

First influenza A H3N2 subclade K variant cases detected in Panama Read more at: https://beaconbio.org/en/report/?reportid=d0b20464-bdfd-4039-ab03-23b2a89b95eb&eventid=56e1507a-99bc-4c07-b84b-23582b9fe81c&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Shiga toxin-producing E. coli (STEC) infections epidemiologically linked to Pizza Pops: 20 cases with four hospitalizations across five provinces in Canada https://beaconbio.org/en/report/?reportid=be602184-fe5e-4842-bb04-bd738a544d46&eventid=9b758861-a245-4f92-bed9-373650dc6ec3&utm_source=bluesky

Measles outbreak accelerates in Darfur, Sudan with Médecins Sans Frontières (MSF) reporting more than 1300 cases at its facilities since September amid healthcare collapse https://beaconbio.org/en/report/?reportid=7d669d6d-01aa-4250-86c6-731c32ad8c61&utm_source=bluesky

Australia's measles cases nearly triple to 168 in 2025 amid global resurgence and declining vaccination coverage https://beaconbio.org/en/report/?reportid=d64827ac-6308-4cb7-a125-0cb7cae27c6a&eventid=15030543-e71a-4066-ab93-5bdda716c18f&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Influenza test positivity increases to 14.8% with higher number of cases noted in multiple US states and A(H3N2) subtype dominating https://beaconbio.org/en/report/?reportid=006a0a06-3631-46a7-83f2-18ec3714790e&eventid=acc88852-9f37-4dfb-bbc5-b84b70e1a1a9&utm_source=bluesky&utm_medium=social

Escalating dog bite incidents and rabies deaths in Karachi highlight the urgent need for coordinated control measures in Pakistan. https://beaconbio.org/en/report/?reportid=eb7011fe-5bae-4827-a375-3ea7fc68c934&eventid=b9bac9fd-e3f3-4e8f-b18b-0a7ab4d1ea09&utm_source=bluesky&utm_medium=social

Lassa fever cases increase to 1069 in Nigeria with 195 deaths year to date Read more at: https://beaconbio.org/en/report/?reportid=04b372b1-4ff0-4616-9c3c-7f802e78f771&eventid=49924204-5756-43b7-b30a-65e3354be0da&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost

Request for information (RFI): Acute gastroenteritis outbreak among daycare children in Guasave, Sinaloa, Mexic... https://beaconbio.org/en/report/?reportid=559b3c75-082f-47cd-8117-c5e8f876b1a6&eventid=209fffca-881c-47a4-880e-e60cbd73f6e8&utm_source=bluesky&utm_medium=social&utm_campaign=socialpost