Infectious Disease
Expert guidance on antimicrobial stewardship, emerging infections, and complex infectious disease management.
Recent Discussions
What is your approach to management of patients with recurrent orolabial herpes?
Recurrent orolabial herpes is fundamentally a disease of viral latency with episodic reactivation, so my approach focuses less on “treating infection” and more on reducing recurrence burden, shortening symptom duration, and improving quality of life. First, I make sure we are actually dealing with H...
What, if any, oral or IV antibiotic suppression options would you consider for a patient with a history of recurrent fluoroquinolone- and TMP-SMX-resistant ESBL E. coli bacteremia with relapsed ESBL E. coli lumbar spinal hardware infection who previously underwent lumbar I&D with hardware retention and is not a candidate for further surgery?
This is a challenging case and difficult to answer definitively without additional details, particularly the full antibiogram and patient context. In general, while suppressive antibiotics are sometimes used when infected hardware is retained, and further source control is not possible, this is alwa...
What is your approach to iron supplementation in patients with an active infection?
In patients with active infections, I generally avoid intravenous iron due to the potential for promoting pathogen growth, a practice supported by cautions from nephrology and gastroenterology society guidelines. However, evidence for the risk of infection with IV iron is inconsistent, underpowered,...
Do you add an adjunctive echinocandin in patients with Pneumocystis?
Though there is emerging literature suggesting that echinocandins may have a role in treating PJP, the dose has not been defined, and TMP-SMX remains the first-line agent.
Do you recommend a prolonged duration of antibiotics and/or suppression for patients without pre-existing hardware who have placement of new hardware after decompression/washout of a Staphylococcus aureus epidural abscess?
If the hardware is placed in the setting of active infection, then I usually chronically suppress the patient indefinitely after treating for the acute infection.
How do you approach the use of fidaxomicin versus vancomycin for initial Clostridioides difficile infection in immunocompromised patients, considering the lower recurrence rates but higher cost of fidaxomicin?
Whether immunocompromised or not, fidaxomicin has been demonstrated to be superior to vancomycin – not in resolution of the acute infection but in reducing the risk or recurrence by approximately one-half. In one study of hospitalized patients published in 2015, it was reported that, when taking int...
When do you use a carbapenem empirically to treat a patient with Acinetobacter infection?
Significant rates of Acinetobacter resistance to multiple classes of antimicrobial agents are a global concern. Mechanisms of resistance include bacterial production of beta-lactamases (i.e., carbapenemases), changes in porin channels, and alterations of target or cellular function due to mutations ...
How do you counsel a patient diagnosed with HTLV after an abnormal blood donor screening, especially in light of new data that dolutegravir may reduce uncommon but severe neurological outcomes associated with infection?
We actually do not see many individuals with HTLV disease at present in the US. Having said that, HTLV is a retrovirus, so it is biologically plausible that integrase inhibitors (like dolutegravir) could reduce viral spread in the body. However, the key counseling message is: evidence is still emerg...
What is your approach to empiric treatment of achromobacter infections?
Achromobacter is a Gram-negative bacterium in the Burkholderia order. This pathogen is significant in immunocompromised patients, such as those with cancer or Cystic fibrosis, and is seen with bacteremia or causing pneumonia. They can also be associated with foreign device infections. Typically, the...
How would you manage MRSA and Enterococcus faecalis bacteriuria in a patient presenting in severe heart failure without urinary symptoms, fever, or chills, two negative blood cultures, and whose transthoracic echocardiogram shows no new valvular abnormalities?
The core question here is: are you dealing with asymptomatic bacteriuria or a true infection? In the absence of urinary symptoms and in following the IDSA UTI guidelines, asymptomatic bacteria should not be treated except in specific clinical scenarios - pregnancy, urologic instrumentation, renal tr...