Infectious Disease
Expert guidance on antimicrobial stewardship, emerging infections, and complex infectious disease management.
Recent Discussions
What is your approach to management of CIED in a patient with community-acquired Staph aureus bacteremia who clears blood cultures quickly with negative follow up blood cultures within 72 hours of antimicrobial therapy and negative TEE?
The recent 2023 guidelines on AHS CIEDI defined definite CIED infection as 2 or more sets of blood cultures positive for staph aureus or CoNS + (positive TEE and/Or positive PET/CT). The guidelines stated that the organism isolated from blood cultures determines the likelihood of CIEDI, and coagulas...
What is your approach to duration of systemic antibiotics for treatment of isolated bacterial endophthalmitis in the absence of bacteremia or other deep-seated metastatic foci of infection?
Post-surgical (exogenous) endophthalmitis is an uncommon complication. The incidence ranges from 0.04%-0.3%, 0.019%- 0.54%, and 0.11% - 0.03% following cataract surgery, intravitreal injection, and vitrectomy, respectively (Soliman et al., PMID 32467482). Initial management of exogenous endophthalmi...
Do you recommend chronic oral suppressive antibiotics after initial intensive treatment of 6-8 weeks in patients with culture-negative prosthetic joint or bone infections with retained hardware?
Another one of those questions without a clear-cut answer. Several retrospective, uncontrolled papers (I should know. I’ve co-authored one myself) suggest this practice is “helpful”. BUT, virtually all these observations are retrospective with relatively short-term follow-up (often 1 or 2 years), an...
What factors should guide the choice between fosfomycin and nitrofurantoin for uncomplicated cystitis, given the reduced efficacy of fosfomycin?
I agree with the authors you reference that, though fosfomycin is listed as a first-line option in the 2011 IDSA UTI guidelines for uncomplicated cystitis, our assessment of its efficacy has changed somewhat since then.We now have two larger randomized controlled trials that demonstrate that women r...
Do you regularly recommend an immunological workup for patients with suspected immunodeficiency or defer to immunology?
I defer after a very preliminary work-up based on the type of immunodeficiency expected. I try to direct the consult to a provider most likely to have expertise in the problem I suspect. Often, I suggest consulting with a provider at NIH.
Would you recommend treating asymptomatic bacteriuria in a kidney transplant patient who has a ureteral stent in place?
An exercise in futility. You can eradicate for a short period - long enough to safely perform a urologic procedure. But longer term? Fugetaboutit.
Do you recommend to continue acyclovir to prevent HSV infection in an HIV patient with CD4 count more than 200 and with high viral load?
The intent of this question isn't clear. Are you considering treatment of a person to prevent acquisition of HSV? Or to prevent transmission by an infected patient? The wording sort of implies the latter, so that scenario first. There are no data that document efficacy of antiherpetic therapy (acycl...
When do you discontinue contact precautions in patients known to be colonized with ESBL-producing Enterobacterales?
There is no widely accepted guideline regarding the timing of discontinuation of isolation for ESBL-producing organisms. However, according to the article “Duration of Contact Precautions for Acute-Care Settings” published by ICHE in 2018, Maintaining contact precautions for ESBL-E and CRE for the d...
Do you ever stop tobramycin prophylaxis in a patient with chronic bronchiectasis previously colonized with pseudomonas?
Yes, I will often stop tobramycin if there are issues with tolerance, antibiotic resistance, or treatment fatigue. Further, in more mild bronchiectasis (cylindrical vs. varicoid or cystic morphologies), sputum bacterial cultures will negatively convert on chronic cycled inhaled tobramycin, and this ...
Can non-16/18 HPV types cause ASCUS and squamous cervical metaplasia on biopsy within 3 months of acquisition, or would it take longer?
It isn't clear that HPV causes ASCUS. I'm not sure how to interpret "squamous metaplasia" as opposed to dysplasia, but certainly many HPV types other than 16 and 18 cause cervical dysplasia, and probably can do so within 3 months of acquisition. However, I would be cautious in telling a patient that...