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Ammar Zafar

@azmicro.bsky.social
117 followers 125 following 12 posts

Bacterial geneticist interested in host-pathogen interactions. Associate Professor at Emory University School of Medicine. Dept. of Microbiology & Immunology

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Reposted by Ammar Zafar
George O'Toole (he/him/his) @geiselbiofilm.bsky.social · 26/09/2026
Pls share: Two tenure-track positions in Molecular Microbiology at Virginia Tech. I had a great visit there a couple of years ago! jobs.apply.vt.edu/jobs/assista...
jobs.apply.vt.edu
Assistant/Associate Professor - Blacksburg, Virginia, United States
Job Description The Department of Biological Sciences in the College of Science at Virginia Tech seeks applicants for two (2) tenure-track research and teaching positions at the Assistant/Associate ...
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Matthew Lawrenz @lawrenzlab.bsky.social · 20/09/2026
Check out our latest study into nutritional immunity by Yersinia led by postdoc Mahendar Kadari. Our investigations into the metallophore yersinopine revealed some surprising differences in zinc acquisition between Y. pestis and Y. pseudotuberculosis.
journals.asm.org
Yersinopine is a primary zinc acquisition system for Yersinia pseudotuberculosis | mBio
Zinc sequestration by the host is a major component of nutritional immunity that restricts bacterial growth during infection. Here, we identify the opine metallophore yersinopine as a primary zinc acq...
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Reposted by Ammar Zafar
Anita Devineni @anitadevineni.bsky.social · 13/09/2026
My department (Biology at Emory) is hiring for a teaching track position! These are stable, well-respected, long-term positions with a path to promotion and ppl often staying for decades. The dept is wonderfully supportive and filled with amazing humans (faculty + staff) apply.interfolio.com/191814
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Ammar Zafar @azmicro.bsky.social · 21/05/2026
New work from the lab focusing on Streptococcus pneumoniae transcriptional changes that occur in the upper respiratory tract.
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Ammar Zafar @azmicro.bsky.social · 19/04/2026
Study from my Lab detailing how Aerobactin-mediated iron acquisition is critical for hypervirulent Klebsiella to disseminate from the gut to cause invasive disease. Tour de Force work led by my wonderful Grad student, Giovanna Hernandez! #PLoSPathogens #Klebsiella journals.plos.org/plospathogen...
journals.plos.org
Aerobactin is a key driver of hypervirulent Klebsiella pneumoniae translocation and virulence
Author summary The emergence of hypervirulent Klebsiella pneumoniae (hvKP) poses a significant public health threat due to its capacity to cause severe, often fatal, systemic infections. Of further co...
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Reposted by Ammar Zafar
Olaya Rendueles @olayarendueles.bsky.social · 22/04/2025
Don't miss the 4rth and last session of @klebclub.bsky.social focusing on #Klebsiella as part of complex microbial communities ! Our keynote speaker will be Kevin Foster, followed by some #phage talks from Mark Mimee and Sara Forsstrom! #microsky #phagesky Registration is free but necessary!
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Ammar Zafar @azmicro.bsky.social · 21/03/2026
New preprint from the lab detailing role of stringent stress response regulator DksA in Klebsiella pneumoniae pathogenesis.
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Reposted by Ammar Zafar
Ira Blader @bladerlab.bsky.social · 09/03/2026
Reposting our open #postdoc position with link to the application website . Come join us and learn how encephalitis triggers seizures and how to treat them jobs.apply.vt.edu/jobs/postdoc...
jobs.apply.vt.edu
Postdoctoral Associate - Blacksburg, Virginia, United States
Job Description The Blader Laboratory studies how infections in the brain cause neuronal complications such as seizures. We reported that when mice are infected with the protozoan parasite that the ...
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Ammar Zafar @azmicro.bsky.social · 21/02/2026
Last week my second PhD student Giovanna defended her thesis. Could not have asked for a better student, who worked completely independently the last one year! Amazing body of work that is soon to be published. Wishing her the best of luck in all her future endeavors.
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Ammar Zafar @azmicro.bsky.social · 11/02/2026
New paper out from the Zafar/Haas lab detailing how complement system protects against fatal dissemination of Klebsiella pneumoniae from the gut to systemic sites. Work led by the fabulous postdoc Juan Valencia-Bacca @juanvalenciabacca.bsky.social
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Laura Mike @lauraamike.bsky.social · 09/02/2026
✨If you have a story you would like to share with the community, please submit an abstract by Feb 16. ✨
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Ammar Zafar @azmicro.bsky.social · 05/08/2025
We have a protocols paper out led by fantastic post docs Juan Valencia-Bacca and Maidul Islam. More animal tools for the Kleb research community!!
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Ammar Zafar @azmicro.bsky.social · 01/07/2025
Our comprehensive review on bacterial transmission is out today in MMBR @asm.org, which took us ~2 years to put together. Thanks to Kim Walker @drwalkermsbanta.bsky.social and my graduate student, Giovanna Hernandez, for all the hard work they put into this review! journals.asm.org/eprint/JIVRR...
journals.asm.org
Mechanisms of bacterial host-to-host transmission | Microbiology and Molecular Biology Reviews
SUMMARYBacterial pathogens must navigate complex host environments to thrive, replicate, and ultimately transmit to new hosts. Effective transmission is critical for pathogen propagation and often requires overcoming host defenses and exploiting ...
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Reposted by Ammar Zafar
Andreas Bäumler @abaumler.bsky.social · 04/04/2025
🚨 Big news! Infection and Immunity is now open access! 🌍🔬 That means wider visibility & impact for your research. Worried about fees? 💸 Check out how IAI stacks up against other journals—you might be surprised. #OpenAccess #SciComm #Microbiology
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Nature Communications @natcomms.nature.com · 28/02/2025
Klebsiella pneumoniae uses a type VI secretion system to overcome microbiota-mediated colonization resistance @azmicro.bsky.social @emorydeptofmed.bsky.social #microbiome #bacteria #pathogens #microbiology www.nature.com/articles/s41...
Figure summarizing the regulatory effects induced by the gastrointestinal tract environment on Klebsiella pneumoniae, leading to T6SS-mediated killing of Betaproteobacteria.
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Ammar Zafar @azmicro.bsky.social · 07/02/2025
After 6 wonderful years at Wake Forest School of Medicine the Zafar lab is now officially open at Emory School of Medicine in the dept. of microbiology and immunology!
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Ammar Zafar @azmicro.bsky.social · 04/02/2025
Post Doc Juan Valencia-Bacca representing the Zafar/Haas lab at the mid-Atlantic microbial pathogenesis meeting #mampm describing the role of gut complement in controlling K pneumoniae!
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Ammar Zafar @azmicro.bsky.social · 28/01/2025
First post! Our study in Nature Comms showing the importance of the T6SS of Klebsiella pneumoniae in gut colonization. We combined tn-seq with metagenomics and identified new microbiota targets and T6SS regulators. Major thanks to Kim walker and Virginia Miller www.nature.com/articles/s41...
nature.com
Klebsiella pneumoniae employs a type VI secretion system to overcome microbiota-mediated colonization resistance - Nature Communications
Through metagenomics, Bray et al. identified Klebsiella pneumoniae interacting microbiota partners in the gut, and a transposon mutagenesis screen revealed a role for its T6SS in gut colonization, wit...
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