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Caitlin Rivers

@cmyeaton

Infectious disease epidemiologist @JohnsHopkinsSPH. Associate professor. Author of CRISIS AVERTED (Viking). Outbreak newsletter at caitlinrivers.substack.com

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13.11.2024
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Latest posts by Caitlin Rivers @cmyeaton

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Where Have All the Long COVID Clinics Gone? A nationwide survey reveals the uncertain state of specialized care for Americans living with the chronic condition

In 2022, I counted more than 400 healthcare centers in the U.S. offering Long COVID care. @delfimarchese.bsky.social followed up three years later, and found many of them have closed... or at least failed to respond to our inquiries.

Her investigation for @thesicktimes.org: clinics.thesicktimes.org

10.03.2026 17:24 πŸ‘ 70 πŸ” 35 πŸ’¬ 4 πŸ“Œ 1
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Outbreak Outlook - National - March 8 Flu plateau, RSV hospitalizations rise, Covid low

The spell has broken! Flu, Covid-19 and RSV are all heading in the right direction, finally. (Although RSV is still a bit iffy.) caitlinrivers.substack.com/p/outbreak-o...

09.03.2026 14:56 πŸ‘ 16 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

It might be time to admit that the worst Covid peaks are currently in summer, which has implications for vaccine strategies

04.03.2026 15:47 πŸ‘ 34 πŸ” 10 πŸ’¬ 4 πŸ“Œ 0
FOI Clinical - Issue 4 Measles surges to 1,136 cases across 28 states; RSV rising; updates on legionellosis, Hansen's disease, and infant botulism.

A new edition of FOI Clinical is out, covering the latest trends in measles outbreaks, legionellosis, Hansen's disease, and infant botulism. 96% of readers report finding it useful. πŸ”’ www.foiclinical.com/posts/foi-cl...

04.03.2026 13:32 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Bhattacharya urges measles vaccination as US activity increases

The genomic evidence is a technicality at this point, in my opinion. It's clear we do not meet the intent of holding measles elimination status. The PAHO meeting to decide on our status has been moved to November to allow for completed analysis. www.cidrap.umn.edu/measles/bhat...

04.03.2026 13:03 πŸ‘ 10 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0
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Parents Tried to Shield Their Children From Vaccines. Instead They Got Measles.

I have been so impressed with South Carolina's response to the measles outbreak. What a difficult situation. www.nytimes.com/2026/03/03/u...

03.03.2026 19:25 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

oof

02.03.2026 14:09 πŸ‘ 18 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Outbreak Outlook - National - March 1 Flu plateau, RSV hospitalizations rise, Covid low

I'm sorry but it's still flu season, and RSV is still going around, too. I blame the groundhog. caitlinrivers.substack.com/p/outbreak-o...

02.03.2026 00:16 πŸ‘ 11 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
A line graph showing NSF grant awards made through 2/27/26 for fiscal year 2026 compared with grant awards for fiscal years 2021-2025.

A line graph showing NSF grant awards made through 2/27/26 for fiscal year 2026 compared with grant awards for fiscal years 2021-2025.

NSF Update (Awards through 2/27/26)

Directorates to follow

1/10

01.03.2026 14:48 πŸ‘ 669 πŸ” 446 πŸ’¬ 28 πŸ“Œ 118

It's like letterhead πŸ˜…

28.02.2026 22:16 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Once again: vaccines are popular, actually.

26.02.2026 13:31 πŸ‘ 33 πŸ” 10 πŸ’¬ 1 πŸ“Œ 0

More should be made of the fact that this outbreak of infant botulism from contaminated formula went undetected for a very long time. www.cidrap.umn.edu/sites/defaul...

25.02.2026 22:08 πŸ‘ 7 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
FOI Clinical - Issue 3 Measles continues to spread across multiple states. Q fever cases flagged in California and Maryland. Varicella remains stable. New mumps cases reported.

A new issue of FOI Clinical is now online and in inboxes, covering measles, varicella, Q fever, and mumps. This is an outbreak briefing for clinicians, with breaking news alerts as needed. πŸ”’ www.foiclinical.com/posts/foi-cl...

25.02.2026 12:45 πŸ‘ 4 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Flu still hanging on Flu and RSV activity remain stubbornly high

Flu just will not quit. Activity remains high and stable for much of the country, unfortunately. Covid-19 is doing...ok. RSV is also determined to stick around. Overall grade is a C-. caitlinrivers.substack.com/p/flu-still-...

22.02.2026 22:33 πŸ‘ 12 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
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A potential late sequelae of measles after normal recovery.
Occurs in ~ 2/10,000. Fatal.
www.nejm.org/doi/full/10.... @nejm.org today

21.02.2026 14:48 πŸ‘ 193 πŸ” 77 πŸ’¬ 6 πŸ“Œ 4
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What’s Going Around? Week of February 15th Influenza cases remain elevated nationally, while most Southwest Virginia areas report low numbers.

β€œSeasonal influenza activity remains elevated nationally. RSV and COVID-19 activity is elevated in many areas of the country.
Emergency department visits for RSV are highest among infants younger than 1-year-old and children ages 1 to 4” www.wsls.com/news/local/2...

20.02.2026 16:09 πŸ‘ 3 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0
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A little-known flu virus is sickening cattle around the world. Are humans next? Features of recently identified influenza D point to possible pandemic threat

Ever heard of flu D? Hardly anyone else has either. But it deserves your attention. www.science.org/content/arti...

19.02.2026 21:51 πŸ‘ 39 πŸ” 15 πŸ’¬ 1 πŸ“Œ 4
Eurosurveillance | Emergence of Neisseria meningitidis ST-3587 harbouring bla ROB-1 and exhibiting dual resistance to penicillin and ciprofloxacin, Spain, 2024 BACKGROUND Dual penicillin- and ciprofloxacin-resistant Neisseria meningitidis causing invasive meningococcal disease (IMD) have recently emerged in association with sequence type (ST) 3587, harbouring ROB-1 Ξ²-lactamase (bla ROB-1) and a mutated DNA gyrase (gyrA). These strains pose a threat to current antimicrobial treatment and prophylaxis. AIM We aimed to characterise the first dual-resistant N. meningitidis ST-3587 isolates harbouring bla ROB-1 and a mutated gyrA identified in Spain. METHODS Three N. meningitidis isolates encoding bla ROB-1 were identified in 2024. They were characterised by whole genome sequencing to determine capsular genogroups, ST and genetic antimicrobial resistance markers. Dated phylogenetic analysis was performed alongside global ST-3587 strains. RESULTS The three bla ROB-1-encoding isolates belonged to ST-3587, genogroup Y, harboured a T91I mutation in gyrA and showed resistance to penicillin and ciprofloxacin. These isolates were obtained from urethral, oropharyngeal and blood samples, each from a different patient. According to the dated phylogenetic analysis of ST-3587 and the presence of bla ROB-1, two clades were defined: clade I and clade II. Within clade II, subclade II.I was identified, comprising isolates which, in addition to bla ROB-1, carried the T91I mutation in gyrA. This subclade included the three Spanish isolates, which exhibited close genetic relatedness. CONCLUSION This study documents the emergence of N. meningitidis ST-3587 with dual resistance in Europe, including a documented urogenital infection by this lineage. Continued surveillance of antimicrobial resistance in N. meningitidis, including non-invasive cases, is crucial for timely public health responses and effective IMD prevention strategies.

Resistant Neisseria meningitidis with evidence of sexual transmission www.eurosurveillance.org/content/10.2...

19.02.2026 12:51 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1

Maybe this is an occasion where tweet-length is hard, but "Someone who isn’t a board certified MD is leading NIH and CDC. This is reckless" does say that.

19.02.2026 12:22 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Of possible criticisms, do not pick this one. Science and public health expertise =! medical degree.

19.02.2026 12:05 πŸ‘ 20 πŸ” 4 πŸ’¬ 1 πŸ“Œ 1
FOI Clinical - Issue 1 Measles outbreaks ongoing in multiple states; flu B rising; pertussis incidence elevated but below 2024 highs.

The team behind Force of Infection launched a new professional service, an outbreak alert + intelligence briefing for clinicians. Here's our first edition, free to read. The second issue (πŸ”’) is going out this hour. www.foiclinical.com/posts/foi-cl...

18.02.2026 12:37 πŸ‘ 10 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0

I am hiring. Force of Infection is looking for public health writers (both part time ongoing and freelance). All roles are remote and mostly async. Details ⬇️ www.foiclinical.com/opportunities/

14.02.2026 01:50 πŸ‘ 19 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0
Opportunities Lead Writer: We're looking for a part-time lead writer (15-20 hrs/week, contract) to help produce FOI Clinical. Ideal candidates are either a journalist with experience covering public health or a pub...

FOI Clinical is hiring a writer and a sales rep, both part time. www.foiclinical.com/opportunities/

13.02.2026 00:58 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

New World screwworm larvae were detected in an imported horse from Argentina, intercepted at a quarantine facility in Florida, USA.
https://beaconbio.org/en/report/?reportid=aa34a02e-e779-4288-84e4-c4c1d57dba84&eventid=7a1ae0cb-6d86-4ea3-95cc-c1c141b3f696&utm_source=bluesky&utm_medium=social

12.02.2026 18:45 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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FDA refuses to review Moderna’s mRNA flu vaccine application Moderna announced this evening that the Food and Drug Administration (FDA) has refused to initiate a review of its application for an mRNA-based seasonal influenza vaccine.

Blog post with a couple more thoughts: caitlinrivers.substack.com/p/fda-refuse...

11.02.2026 02:31 πŸ‘ 6 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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F.D.A. Refuses to Review Moderna Flu Vaccine

This is troubling for multiple reasons, but one big one is companies won’t want to invest in R&D and clinical trials if they don’t think they can get a fair regulatory reviewβ€”which is at the end of a long and extremely expensive process.

www.nytimes.com/2026/02/10/h...

11.02.2026 00:37 πŸ‘ 330 πŸ” 156 πŸ’¬ 8 πŸ“Œ 21
ID: A flier for the event reads, "The Sick Times: Free Webinar, The Long COVID Op-Ed. Help Break the Stigma. February 19th, 7-8:15pm ET. Learn how to pitch and share your story with tips from expert guests. Hosted by Miles Griffis and Betsy Ladyzhets. Below are the headshots of three guests, Torie Bosch, First Opinion Editor, STAT. Madeline Miller, Best-selling author. Funmi Okunola, MD, Co-founder Long COVID the Answers. A button at the bottom reads, "Comment "RSVP" for a registration link!"

ID: A flier for the event reads, "The Sick Times: Free Webinar, The Long COVID Op-Ed. Help Break the Stigma. February 19th, 7-8:15pm ET. Learn how to pitch and share your story with tips from expert guests. Hosted by Miles Griffis and Betsy Ladyzhets. Below are the headshots of three guests, Torie Bosch, First Opinion Editor, STAT. Madeline Miller, Best-selling author. Funmi Okunola, MD, Co-founder Long COVID the Answers. A button at the bottom reads, "Comment "RSVP" for a registration link!"

Join us for a free webinar! The Sick Times editors @mileswgriffis.bsky.social and @betsyladyzhets.bsky.social β€” plus special guest speakers β€” will demystify the process of writing and pitching op-eds and essays on Long COVID. Register now: us06web.zoom.us/meeting/regi...

09.02.2026 21:14 πŸ‘ 98 πŸ” 57 πŸ’¬ 6 πŸ“Œ 10

Too often, clinicians hear about new outbreaks on the news or even from their patients. FOI Clinical launches Wednesday to equip providers with news you can use in the clinic. www.foiclinical.com

09.02.2026 14:06 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Outbreak Outlook - National - February 8 Respiratory Diseases

Flu, Covid-19 and RSV are all being pretty stubborn. Flu activity is declining for most of the country but is still high. Covid-19 and RSV are more moderate but stable. Norovirus activity is high! substack.com/home/post/p-...

09.02.2026 13:55 πŸ‘ 16 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

I'm beginning to think you could do a decent job running institutions by being of normal temperament and moderately thoughtful. Sortition would probably do a better job than whatever all this is.

08.02.2026 00:15 πŸ‘ 14 πŸ” 3 πŸ’¬ 2 πŸ“Œ 0