Steph N. Seifert, PhD

@stephseifertphd.bsky.social

PI of the Molecular Ecology of Zoonotic and Animal Pathogens Lab Co-PI, Viral Emergence Research Institute Interested in virology, evolution, ecology, and still cares about diversity and equity in STEM she/her

Really excited to see this peer-reviewed and published and published in epidemiology and infection. This work was motivated by the observation that we do not see #LassaFever outbreaks in sense West African cities despite high predicted biological hazard. doi.org/10.1017/S095...

The Socio-economic Shield Limits Lassa Virus Spillover in Urban West Africa | Epidemiology & Infection | Cambridge Core

The Socio-economic Shield Limits Lassa Virus Spillover in Urban West Africa

doi.org

Scientists have mobilized against OMB's power grab, but we need to look beyond our own grants and make coalitions with neighbors whose hospitals, schools, broadband, roads and parks are at risk. Go out and talk to your town council and county commission! www.forbes.com/sites/judyst... 🧪

How The OMB Rule Could Hurt You And Your Town

The OMB proposal threatens scientific research and ALL federal funding for states, cities, and nonprofits. It politicizes ALL funding. Call your reps and write an objection.

forbes.com

Thousands of biomedical studies are stuck in limbo as NIH drags out renewals months after annual budgets expire. Since 2025, the rate of overdue renewals has TRIPLED. This leaves scientists unable to plan, keep staff employed, or maintain long-term research. grant-witness.us/posts/2026-0... #NIH 🧪

Overdue Grant Renewals at NIH and AHRQ – Grant Witness

The government’s delays renewing in-progress research are leaving researchers in limbo.

grant-witness.us

After 7 days, #NSF grants started flowing again yesterday. NSF generally stops during fiscal year turnover, government shutdowns, or funding lapses. Other than that, it had not taken a week off since 1970. Under this administration, it has done so three times. grant-witness.us/posts/2026-0... 🧪

NSF’s Halts in Grantmaking are Unprecedented – Grant Witness

The National Science Foundation’s pause breaks decades of consistency and continuity.

grant-witness.us

Beyond excited to share that the preprint for the first chapter of my dissertation is up. So grateful to my co-authors and especially my PI, @stephseifertphd.bsky.social, for their support throughout this ambitious three-year project. Here’s to shaking up evolutionary paradigms 🥂

Steph N. Seifert, PhD@stephseifertphd.bsky.social · 2mo ago

🚨 Ever wonder why some viral reassortants establish and spread while others disappear? Us too! Led by @ricardoriveroh.bsky.social, we studied drivers of viral reassortment across hantaviruses and found that it varies dramatically among lineages (1/3) Preprint: doi.org/10.64898/202...

New preprint that I helped with! Here we show that understanding ecological context is fundamental to understanding reassortment in orthohantaviruses.

Steph N. Seifert, PhD@stephseifertphd.bsky.social · 2mo ago

🚨 Ever wonder why some viral reassortants establish and spread while others disappear? Us too! Led by @ricardoriveroh.bsky.social, we studied drivers of viral reassortment across hantaviruses and found that it varies dramatically among lineages (1/3) Preprint: doi.org/10.64898/202...

Fun fact: Our CREID-ECA renewal proposed generating standardized diagnostic controls and reagents for all known zoonotic filoviruses (including BDBV), with stocks ready to ship from East Africa to partner countries under existing MOUs. Then the entire CREID network program was canceled. 🫠

For the last three years, we have gathered ALL available Hantavirus and Arenavirus surveillance data. Today, we’re glad to share the largest database ever assembled for these viruses. We hope it helps address questions from the recent ANDV outbreak and guide surveillance.

David Simons @davidsimons.bsky.social · 2mo ago

1/7 New #ecology preprint out. We’ve spent half a century searching for Arenavirus and Hantavirus reservoirs, but it turns out global surveillance is essentially just us looking under the nearest streetlight. It is decoupled from actual host biodiversity.🧵 doi.org/10.64898/202...

Largest data synthesis effort for hantavirus and arenavirus surveillance ever put together! Proud to have this paper up; while the dataset and analyses on hantaviruses is especially timely, we started this project when @davidsimons.bsky.social received an FIR through @viralemergence.org in 2023. 🐀🦠

David Simons @davidsimons.bsky.social · 2mo ago

1/7 New #ecology preprint out. We’ve spent half a century searching for Arenavirus and Hantavirus reservoirs, but it turns out global surveillance is essentially just us looking under the nearest streetlight. It is decoupled from actual host biodiversity.🧵 doi.org/10.64898/202...

More details soon but just got notice of award on a large grant in the AIxBio / biosecurity space! Will be hiring postdocs soon, and so will a few of my collaborators. Email me if interested!

Are interacting species showing more similar responses to environmental predictors than expected by chance? Is this similarity protecting species pairs from interaction disruption under climate change? If you want to find out, join us for a fully funded Ph.D. with @epic-biodiversity.org 🌎🧪

ÉPICBiodiversity@epic-biodiversity.org · 3mo ago

Join us! We are looking for a Ph.D. student to work on the response of ecological network structure to environmental drivers; this line of research can be adapted to questions on climate change, phylogenetic conservatism, and more! 🧪🌎 epic-biodiversity.org/opportunities/

Our important research on SNV genomes from the PNW is out. It constitutes a timely reminder of Hantavirus circulation in US rodent population and its ability to infect multiple hosts and undergo reassortment to generate expanded genetic diversity.

Steph N. Seifert, PhD@stephseifertphd.bsky.social · 3mo ago

Coincidentally, our paper on the first SNV genomes is out now in EID led by Grant Rickard and @ricardoriveroh.bsky.social More soon, including a massive synthesis effort on hantavirus and arenavirus surveillance that's been 3-years in the making... wwwnc.cdc.gov/eid/article/...

As an ESI, I've been wondering who will be left to rebuild our biomedical and basic research infrastructure in 2.5 - ?? years. Expertise is not a faucet that you flip on and off when it's convenient. Expertise is developed through sustained investment; each delay, each cut, and we lose experts.

Kristian G. Andersen@kgandersen.bsky.social · 3mo ago

The article also mentions the cancelation of NIH's "CREID" network that were specifically there to strengthen pandemic preparedness. As I mentioned earlier in the week, our primary focus for our "WARN-ID" moving forward was, 🥁, hantaviruses, because, yes, they're trouble. bsky.app/profile/kgan...

Wild how fast conspiracy news went from "rare disease" to "mRNA vaccines" to "lab leak". HFRS-associated human hantavirus infections in Europe/Asia are a significant and persistent public health problem. Vaccines against HFRS have been around since the early 90s.