The Edge of Epidemiology by Devin Teichrow
The Pathogen Dispatch

Source-first newsroom desks

Tracked outbreak file

Dengue and arboviruses

A durable desk file assembled from current reporting, official updates, and source clusters.

5 item(s) 4 source(s) 2 official Updated: 2026-05-19T23:04:22
CDC MMWROutbreak News TodayReliefWebThe Sunday GuardianNorth AmericaSouth AsiaOceania

Recommendations and Reports: CDC Operational Guidance for Investigating Locally Acquired Mosquito-Transmitted Malaria

Lead source: CDC MMWR

What happened

Recommendations and Reports: CDC Operational Guidance for Investigating Locally Acquired Mosquito-Transmitted Malaria

Why it matters

This story has both official follow-up and broad publisher corroboration across 3 newsroom source(s).

What changed in this run

Latest summary: 1 newly observed linked item(s) were added since the last saved snapshot.

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Official Sources

Official source

Recommendations and Reports: CDC Operational Guidance for Investigating Locally Acquired Mosquito-Transmitted Malaria

Recommendations and Reports / May 21, 2026 / 75(1);1–14 Nikhil Ranadive, MD 1 ,2 ,3 ; Joel L.N. Ridpath, MD 2 ( View author affiliations ) Guidance for Enhanced Investigation for Suspected Autochthonous Malaria Transmission During 2023, 10 cases of locally acquired mosquito-transmitted (autochthonous) malaria were reported to CDC from four U.S. states after a 20-year period with no autochthonous cases.

CDC MMWROfficialOfficial agencyLiveNorth America2026-05-19T17:00+00:00Source-link only

Publisher Coverage

Publisher coverage

Sri Lanka reports increase in dengue in 2026

In a follow-up on the dengue fever situation in Sri Lanka this year, officials with the National Dengue Control Unit (NDCU) report 27,754 dengue cases as of May 11, an increase in cases compared to 2025. In addition, 14 deaths have been recorded. The highest number of infections has been recorded in the Western Province, while Matara, Galle, Ratnapura, Kalutara, and Kandy districts have also reported a significant number of cases in the first four months of 2026.

Outbreak News TodayGeneral outletGeneral outlet confidenceLiveSouth Asia2026-05-14T00:07+00:00Resolved article

Timeline

2026-05-12T07:11:173 item(s)3 source(s)
  • Baseline snapshot created with 3 clustered item(s) across 3 source(s).
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
2026-05-14T10:19:444 item(s)4 source(s)
  • New official source(s) joined this story cluster: CDC MMWR.
  • The lead item has changed to Increase in Travel-Associated and Locally Acquired Dengue Cases from CDC MMWR.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T14:24:104 item(s)4 source(s)
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T14:24:553 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T15:28:363 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T18:28:543 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T18:29:593 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T19:29:133 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T20:30:423 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-14T20:31:293 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T00:40:284 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Matangi Tonga.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T03:43:453 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T04:45:023 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T05:46:163 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T06:02:333 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T06:32:073 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T08:51:043 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: Cureus.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T08:51:323 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: Cureus.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T09:50:564 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: EurekAlert!, TheHealthSite.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T09:51:244 item(s)4 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T10:52:363 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T12:54:463 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T13:55:473 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T15:57:443 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T18:00:243 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T19:00:383 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T19:00:413 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T20:02:134 item(s)4 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: The News Pakistan.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T20:02:414 item(s)4 source(s)
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-15T21:04:144 item(s)4 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T04:10:164 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Health and Me.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T04:48:264 item(s)4 source(s)
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:07:434 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Goemkarponn.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:35:265 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: The Straits Times.
  • Story volume increased from 4 to 5 clustered item(s) in the current window.
  • 4 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:35:355 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: The Straits Times.
  • Story volume increased from 4 to 5 clustered item(s) in the current window.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:36:405 item(s)5 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:36:525 item(s)5 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T06:38:535 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: Goemkarponn.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T07:11:014 item(s)4 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T08:10:584 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Goemkarponn.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T08:11:074 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Goemkarponn.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T09:12:234 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T09:12:324 item(s)4 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T10:14:473 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T11:14:174 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Goemkarponn.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T12:15:054 item(s)4 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T14:18:004 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: The Sunday Times, Sri Lanka.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T15:19:154 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T15:19:234 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T16:20:185 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: The Straits Times, The Sunday Times, Sri Lanka.
  • Story volume increased from 4 to 5 clustered item(s) in the current window.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T17:20:525 item(s)5 source(s)
  • 4 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T17:21:155 item(s)5 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 4 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T18:21:524 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: The Sunday Times, Sri Lanka.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T19:23:524 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: The Tribune.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T19:24:014 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: The Tribune.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T20:24:344 item(s)4 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Outbreak News Today.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-16T22:25:524 item(s)4 source(s)
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-17T00:29:143 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-17T01:29:223 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-17T10:37:523 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: CNA, Free Press Journal, The News Pakistan.
  • The lead item has changed to Maharashtra: Dengue Scare In Uran’s Chanje Village After Woman’s Death; Samples Sent For Testing from Free Press Journal.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-17T14:44:433 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: Borneo Bulletin.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T00:57:443 item(s)3 source(s)
  • New official source(s) joined this story cluster: CDC MMWR.
  • The lead item has changed to Increase in Travel-Associated and Locally Acquired Dengue Cases from CDC MMWR.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T01:59:273 item(s)3 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T03:02:003 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: The News Pakistan.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T04:02:504 item(s)4 source(s)
  • Free Press Journal now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T04:03:174 item(s)4 source(s)
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T05:03:213 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T06:02:503 item(s)3 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T06:32:163 item(s)3 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: Free Press Journal, Outbreak News Today.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-18T12:16:234 item(s)3 source(s)
  • New publisher/source coverage joined this story cluster: CNA.
  • Story volume increased from 3 to 4 clustered item(s) in the current window.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T10:51:155 item(s)4 source(s)
  • CDC MMWR now explicitly uses investigation or monitoring language.
  • New publisher/source coverage joined this story cluster: Outbreak News Today, ReliefWeb, The Sunday Guardian.
  • The lead item has changed to Recommendations and Reports: CDC Operational Guidance for Investigating Locally Acquired Mosquito-Transmitted Malaria from CDC MMWR.
  • Story volume increased from 4 to 5 clustered item(s) in the current window.
2026-05-19T11:51:397 item(s)6 source(s)
  • New publisher/source coverage joined this story cluster: CNA, MSN.
  • Story volume increased from 5 to 7 clustered item(s) in the current window.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T11:52:097 item(s)6 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • New publisher/source coverage joined this story cluster: CNA, MSN.
  • Story volume increased from 5 to 7 clustered item(s) in the current window.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T12:53:376 item(s)5 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T12:54:286 item(s)5 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T13:56:126 item(s)5 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T14:58:248 item(s)7 source(s)
  • New publisher/source coverage joined this story cluster: CNA, The Straits Times.
  • Story volume increased from 6 to 8 clustered item(s) in the current window.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T14:59:088 item(s)7 source(s)
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T15:59:208 item(s)7 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 3 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T16:58:555 item(s)4 source(s)
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T18:00:036 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: MSN.
  • Story volume increased from 5 to 6 clustered item(s) in the current window.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T18:00:086 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: MSN.
  • Story volume increased from 5 to 6 clustered item(s) in the current window.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T19:00:336 item(s)5 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T20:02:196 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: Ground Report.
  • 1 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T20:02:266 item(s)5 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T21:02:216 item(s)5 source(s)
  • New publisher/source coverage joined this story cluster: Outbreak News Today.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T22:03:436 item(s)5 source(s)
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T22:04:316 item(s)5 source(s)
  • Outbreak News Today now includes deaths or fatal cases in the story frame.
  • 2 newly observed linked item(s) were added since the last saved snapshot.
2026-05-19T23:04:225 item(s)4 source(s)
  • 1 newly observed linked item(s) were added since the last saved snapshot.