Episomal virus maintenance enables bacterial population recovery from infection and promotes virus–bacterial coexistence
Abstract. Viruses are ubiquitous in aquatic environments with total densities of virus-like particles often exceeding 107/ml in surface marine oligotrophic
Excited to share our grad student Akash Arani’s (co-first author) recent paper in the ISME Journal! Along with collaborators at @ua.es, we show how episomal virus maintenance enables bacterial recovery and promotes virus–host coexistence in hypersaline environments.
doi.org/10.1093/isme...
05.06.2025 15:58
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JCI Insight -
New Pseudomonas infections drive Pf phage transmission in CF airways
Congratulations to @juliepourtois.bsky.social, a postdoc in our group, on her new paper now available as an In Press Preview on JCI! 🥳🥳🥳 Based on her PhD at Stanford, the study shows how new Pseudomonas infections drive Pf phage spread in CF airways.
Read it here: insight.jci.org/articles/vie...
07.05.2025 23:06
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Akash Arani, a biology grad student in our group, has been accepted to @sfiscience.bsky.social's Complex Systems Summer School! A fantastic opportunity to dive deep into transdisciplinary science—congrats, Akash! 👏
07.05.2025 23:02
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Dr. Joshua Weitz: Asymptomatic COVID-19 Spreaders
Podcast Episode · Critically Speaking · 04/29/2025 · 32m
@joshuasweitz.bsky.social joins Dr. Teri Markow on the @criticallyspeaking.bsky.social to discuss silent transmission, asymptomatic spread, and what it all means for the future of pandemics. 🎙️
Listen to the episode here: podcasts.apple.com/us/podcast/d...
02.05.2025 20:23
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Delighted to share news that Emma Wachter defended her honor's thesis on 'Assessing mechanisms of non-exponential decay in viral systems' in the Dept. of Biology at UMD as part of her work in @weitz-group.bsky.social.
She is off to Dana Farber for a postbac. Congrats to Emma!
29.04.2025 13:18
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An engaging meetup on matters aquatic viral ecology related... in advance of the international Aquatic Virus Workshop in early May to take place in Banyuls-sur-Mer. Thanks to @beckettstephen.bsky.social, @juliepourtois.bsky.social + @tgoel.bsky.social + all participants for making it possible.
23.04.2025 15:48
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Group photo
Event flyer
Had a great meeting talking science and discussing avenues for moving frontiers at the Maryland aquatic viral ecology meeting last week. Many thanks to co-organizers @juliepourtois.bsky.social and @tgoel.bsky.social, and to all who participated!
22.04.2025 14:46
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Bonus link for those interested, another way to look at this same issue is here:
bsky.app/profile/leos...
Reinforcing the key message - CDC's measles page should be updated to dispel the impression that the outbreak is always on the way out, when that's not the case.
04.04.2025 19:47
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Visualizing the Impacts of Federal Cuts to Medical Research & Why It Matters
Why it matters how we communicate and visualize the impacts of proposed and ongoing cuts to science and medical research nationwide.
Visualizing the Impacts of Federal Cuts to Medical Research & Why It Matters
New #substack on collaborative effort with @asinclair.bsky.social and our #SCIMaP team
Website: scienceimpacts.org
Read more here:
open.substack.com/pub/joshuasw...
04.04.2025 03:15
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US map via scienceimpacts.org visualization of economic loss due to IDC cuts to 15% as part of Feb 7, 2025 executive order, with shading denoting intensity of cuts.
Working with an interdisciplinary team, we have developed a website to communicate how the White House's proposed cuts to health research would cause losses of $16B and 68,500 jobs.
Find out how your community may be impacted.
Explore more at SCIMaP: scienceimpacts.org
a 🧵
28.03.2025 02:15
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It's publication day for "Asymptomatic" via Johns Hopkins U Press. The book explores the paradox of asymptomatic transmission and rationale for proactive steps to confront future pandemics:
bit.ly/asymptomatic...
22.10.2024 12:48
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👋 Hello Bluesky! We’re the Weitz Group at the @univofmaryland.bsky.social, led by Prof. @joshuasweitz.bsky.social. We study how viruses shape the fate of cells, populations, and ecosystems—combining theory, data, and a dash of quantitative chaos.
Please, follow us here. 🧪📈🦠 #WeitzGroup
10.04.2025 19:46
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