Erik Karlsson
@eakarlsson.bsky.social
Emerging/endemic infectious diseases, mostly viruses. Pandemic Prevention. Early Warning. One Health. Science outside-the-box. Views my own. 🦠🧪🔬🐓🦇
The takeaway: H5 #avianflu isn’t slowing down. It’s accelerating. And each new clade is a reminder that surveillance, sequencing, and real cross-sector coordination aren’t optional, they’re the only way to keep up. 🦠🥼😷🔬🐓🧪
#H5N1 #influenza #avianinfluenza #birdflu
#H5N1 #influenza #avianinfluenza #birdflu
November 26, 2025 at 4:06 PM
The takeaway: H5 #avianflu isn’t slowing down. It’s accelerating. And each new clade is a reminder that surveillance, sequencing, and real cross-sector coordination aren’t optional, they’re the only way to keep up. 🦠🥼😷🔬🐓🧪
#H5N1 #influenza #avianinfluenza #birdflu
#H5N1 #influenza #avianinfluenza #birdflu
Grateful to the team led by Benjamin Larsen, Cameron Myhrvold, and @ajtevelthuis.bsky.social, and proud that @jsiegers.bsky.social and the IPC Virology Unit could contribute.
Sometimes evolution whispers. You just have to be listening fast enough to hear it.
Sometimes evolution whispers. You just have to be listening fast enough to hear it.
October 25, 2025 at 1:47 AM
Grateful to the team led by Benjamin Larsen, Cameron Myhrvold, and @ajtevelthuis.bsky.social, and proud that @jsiegers.bsky.social and the IPC Virology Unit could contribute.
Sometimes evolution whispers. You just have to be listening fast enough to hear it.
Sometimes evolution whispers. You just have to be listening fast enough to hear it.
When those shifts happen, like the PB2-E627K mutation we’ve seen in human #H5N1 cases in #Cambodia, the clock starts ticking. Speed matters. #Surveillance only works if it moves fast enough to turn data into action.
www.nejm.org/doi/full/10....
www.nejm.org/doi/full/10....
Resurgence of Zoonotic Highly Pathogenic Avian Influenza A(H5N1) Virus in Cambodia | NEJM
In this report from Cambodia, 16 human cases of highly pathogenic avian influenza
A(H5N1) virus infection that occurred from February 2023 through August 2024 are described.
www.nejm.org
October 25, 2025 at 1:47 AM
When those shifts happen, like the PB2-E627K mutation we’ve seen in human #H5N1 cases in #Cambodia, the clock starts ticking. Speed matters. #Surveillance only works if it moves fast enough to turn data into action.
www.nejm.org/doi/full/10....
www.nejm.org/doi/full/10....
Genomics show no human-to-human transmission but evolution’s been busy. A local clade quietly swapped genes with others, creating a new reassortant now spreading across the Greater Mekong.
October 23, 2025 at 5:04 AM
Genomics show no human-to-human transmission but evolution’s been busy. A local clade quietly swapped genes with others, creating a new reassortant now spreading across the Greater Mekong.
@angierasmussen.bsky.social @marionkoopmans.bsky.social @fao.org @who.int @jsiegers.bsky.social @peaseroland.bsky.social
August 6, 2025 at 1:53 PM
Read more here: cambodianess.com/article/siem...
Siem Reap Man in ICU as Cambodia Confirms 14th H5N1 Case
PHNOM PENH — A 26-year-old man from Siem Reap has tested positive for the H5N1 strain of avian influenza, bringing Cambodia’s total number of hum...
cambodianess.com
July 29, 2025 at 2:21 PM
Read more here: cambodianess.com/article/siem...
Cambodia continues to lead a coordinated #OneHealth response — linking human, animal, and environmental health. Early #detection, rapid #diagnostics, and cross-sector #collaboration are essential to prevent and respond to current and future spillover events.
🧪🧬🥼🦠🔬😷🐓💉
#GlobalHealth #H5N1
🧪🧬🥼🦠🔬😷🐓💉
#GlobalHealth #H5N1
July 29, 2025 at 12:00 PM
Cambodia continues to lead a coordinated #OneHealth response — linking human, animal, and environmental health. Early #detection, rapid #diagnostics, and cross-sector #collaboration are essential to prevent and respond to current and future spillover events.
🧪🧬🥼🦠🔬😷🐓💉
#GlobalHealth #H5N1
🧪🧬🥼🦠🔬😷🐓💉
#GlobalHealth #H5N1
All cases have been linked to #poultry exposure, with no evidence of human-to-human transmission.
The virus remains the #reassortant strain that emerged in 2023, a reminder of the continued #zoonotic risk.
🧪🧬🥼🦠🔬😷🐓💉
🔗 medrxiv.org/content/10.1...
The virus remains the #reassortant strain that emerged in 2023, a reminder of the continued #zoonotic risk.
🧪🧬🥼🦠🔬😷🐓💉
🔗 medrxiv.org/content/10.1...
Emergence of a Novel Reassortant Clade 2.3.2.1c Avian Influenza A/H5N1 Virus Associated with Human Cases in Cambodia
After nearly a decade without reported human A/H5N1 infections, Cambodia faced a sudden resurgence with 16 cases between February 2023 and August 2024, all caused by A/H5 clade 2.3.2.1c viruses. Fourt...
medrxiv.org
July 29, 2025 at 12:00 PM
All cases have been linked to #poultry exposure, with no evidence of human-to-human transmission.
The virus remains the #reassortant strain that emerged in 2023, a reminder of the continued #zoonotic risk.
🧪🧬🥼🦠🔬😷🐓💉
🔗 medrxiv.org/content/10.1...
The virus remains the #reassortant strain that emerged in 2023, a reminder of the continued #zoonotic risk.
🧪🧬🥼🦠🔬😷🐓💉
🔗 medrxiv.org/content/10.1...
Read more here: www.khmertimeskh.com/501722452/ca... 🧪🦠🧬🔬💉🥼😷🐓🐔🐤🐣🐥
www.khmertimeskh.com
July 23, 2025 at 2:03 AM
Read more here: www.khmertimeskh.com/501722452/ca... 🧪🦠🧬🔬💉🥼😷🐓🐔🐤🐣🐥
Cambodia continues to have strong #OneHealth surveillance and response systems. Coordinated action across human, animal, and environmental sectors is essential to detect #spillover early and prevent wider impacts. 🧪🧬🥼🦠🔬😷🐓💉
July 22, 2025 at 12:27 PM
Cambodia continues to have strong #OneHealth surveillance and response systems. Coordinated action across human, animal, and environmental sectors is essential to detect #spillover early and prevent wider impacts. 🧪🧬🥼🦠🔬😷🐓💉
Why join the Virology Unit @ IPC?
Because we’re not just a lab—we’re a team.
We work across borders, disciplines, and sectors. We train, publish, investigate, and respond.
If you want great science and to be part of something dynamic—this is it.
Apply now. Start soon.
🧪🧬🥼🦠🔬🐓💉🦇😷
Because we’re not just a lab—we’re a team.
We work across borders, disciplines, and sectors. We train, publish, investigate, and respond.
If you want great science and to be part of something dynamic—this is it.
Apply now. Start soon.
🧪🧬🥼🦠🔬🐓💉🦇😷
July 11, 2025 at 12:28 AM
Why join the Virology Unit @ IPC?
Because we’re not just a lab—we’re a team.
We work across borders, disciplines, and sectors. We train, publish, investigate, and respond.
If you want great science and to be part of something dynamic—this is it.
Apply now. Start soon.
🧪🧬🥼🦠🔬🐓💉🦇😷
Because we’re not just a lab—we’re a team.
We work across borders, disciplines, and sectors. We train, publish, investigate, and respond.
If you want great science and to be part of something dynamic—this is it.
Apply now. Start soon.
🧪🧬🥼🦠🔬🐓💉🦇😷
**Postdoc – Serology at the Human–Animal Interface**
Run large-scale serosurveys. Work with multiplex assays and link field data to transmission risk.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬🐓💉🦇😷
Run large-scale serosurveys. Work with multiplex assays and link field data to transmission risk.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬🐓💉🦇😷
Postdoctoral Researcher focus on Serology at the Human-Animal Interface within the Virology Unit – Institut Pasteur du Cambodge
pasteur-kh.org
July 11, 2025 at 12:28 AM
**Postdoc – Serology at the Human–Animal Interface**
Run large-scale serosurveys. Work with multiplex assays and link field data to transmission risk.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬🐓💉🦇😷
Run large-scale serosurveys. Work with multiplex assays and link field data to transmission risk.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬🐓💉🦇😷
**Postdoc – Environmental Surveillance**
Help pioneer viral detection in wastewater, surfaces, and air. Use qPCR, metagenomics, and novel sampling methods.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬💉🐓🦇😷
Help pioneer viral detection in wastewater, surfaces, and air. Use qPCR, metagenomics, and novel sampling methods.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬💉🐓🦇😷
Postdoctoral Researcher – Environmental Surveillance within the Virology Unit – Institut Pasteur du Cambodge
pasteur-kh.org
July 11, 2025 at 12:28 AM
**Postdoc – Environmental Surveillance**
Help pioneer viral detection in wastewater, surfaces, and air. Use qPCR, metagenomics, and novel sampling methods.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬💉🐓🦇😷
Help pioneer viral detection in wastewater, surfaces, and air. Use qPCR, metagenomics, and novel sampling methods.
Apply: pasteur-kh.org/2025/07/10/p...
🧪🧬🥼🦠🔬💉🐓🦇😷