Christina Faherty

@christinafaher1.bsky.social

Bacterial geneticist 🧫 🦠 🧬 focusing on #Shigella, #enteric #pathogens & #phage. Using host signals & #organoids to study #pathogenesis. Assist Prof at USUHS. Views my own. https://medschool.usuhs.edu/profile/christina-faherty-phd

The CDC warns that extensively drug-resistant (XDR) Shigella is on the rise in US. The prevalence of XDR Shigella isolates in US surveillance data rose from 0% during 2011-2015 to 8.5% in 2023. Read more: ow.ly/VXee50YLphl 📷: CDC, Stephanie Rossow

Rendering of Shigella bacteria under the microscope.

📷: CDC, Stephanie Rossow

Quick takes: -More sick in the E coli outbreak linked to raw cheese & raw dairy products -Increase in Shigella cases in UK, some drug-resistant -The Global Fund approved funds to support the diagnosis and treatment of tuberculosis in Sudan Read more: ow.ly/gcWG50YzXYe.

Quick takes: More E coli tied to raw cheese, drug-resistant Shigella in UK, TB funds for Sudan

The CDC and FDA continue to investigate the E coli outbreak, which has sickened 9 people in 3 states.

ow.ly

New paper from my lab! First (as far as we know) comprehensive review of the Shigella outbreak data collected by CDC between 2009 and 2022. This is going to become my favorite class example of the struggle of dealing with state-reported data at a national level

Frontiers | Temporal trends of Shigella outbreaks in the United States, 2009–2022

BackgroundShigella infections remain a significant public health threat in the United States because of their diverse outbreak patterns and high disease impa...

frontiersin.org

Ever wonder what really goes down in the microscopic battleground of a catheter-associated UTI? 🦠⚔️ Our new review unpacks the Host-Pathogen Interactions during CAUTIs. Thank you, Kurt Kohler and Alyssa La Bella @alabella14.bsky.social for putting this together!!! pubs.acs.org/doi/full/10....

Host Pathogen Interactions during Catheter-Associated Urinary Tract Infections

As a leading cause of healthcare-associated infections, catheter-associated urinary tract infections (CAUTIs) present a unique challenge due to the high prevalence of multidrug-resistant and polymicrobial pathogens. Distinct from uncomplicated UTIs, the insertion of a urinary catheter provokes tissue damage that triggers inflammation, plasma extravasation, and the deposition of host fibrinogen. This inflammatory response drives the robust recruitment of immune cells and plasma extravasation, leading to the accumulation of fibrinogen─a key coagulation protein─on the device and bladder epithelium. This fibrinogen-rich environment creates a unique niche for intricate host–pathogen interactions. Crucially, uropathogens exploit these deposits to establish persistent biofilms, while the protein scaffold simultaneously modulates host immunity. Understanding these mechanisms, particularly the role of fibrinogen-binding adhesins, is vital for developing targeted, antimicrobial-sparing therapeutics. In this perspective, we examine the strategies uropathogens employ to persist in the catheterized bladder, the corresponding host immune response, and emerging strategies to prevent CAUTI.

pubs.acs.org

A fabulous undergraduate researcher I mentor is graduating this spring and is looking for a job as a lab technician! She's interested in bacterial pathogenesis and is planning to go to grad school after getting more research experience. Please let me know if you or anyone you know is hiring!

We are current investigating Shigella cases linked to travel to Cape Verde. Regular handwashing with soap and water (especially after the toilet, changing nappies, and before handling food) is the best way to prevent the bacteria from spreading.

Gauri Godbole
Deputy Director, Gastrointestinal Infections at UKHSA, said:
“We’re investigating a number of Shigella cases in the UK. Most people affected had travelled to Cape Verde, mainly staying at hotels in the Santa Maria and Boa Vista areas.
Shigella can cause watery and bloody diarrhoea, stomach cramps and fever. It can be caught from contaminated food or water, often linked to overseas travel, but can also be transmitted during and after sex.”