Infectious Disease
Expert guidance on antimicrobial stewardship, emerging infections, and complex infectious disease management.
Recent Discussions
When do you recommend limited or targeted respiratory pathogen testing versus a full respiratory pathogen panel in a patient presenting with URI symptoms?
I think we’re asking the wrong group of people. How infectious disease physicians use respiratory pathogen panels is not the same as how emergency medicine or urgent care clinicians use them. For stewards of diagnostics, especially ID providers, the test often doesn’t change management. In many sett...
What approximate portion of men develop infertility following a mumps infection?
In reviewing the literature, 25% is the number that comes up for males post puberty. The mechanism is one of antibodies being produced against germ cells, impacting spermatogenesis.
How do you approach a positive Quantiferon/PPD test result in a patient for whom testing is sent without a clinical indication and who does not have a risk factor for TB exposure nor TB reactivation?
If a test for TB infection such as a Quantiferon or PPD is done without TB exposure risk factor or clincial indication and is positive, a chest X-ray and good history for symptom assessment and exam should be done. I will assess to see if there is an increased risk of developing TB such as an immuno...
Would you consider leaving fever untreated in patients with sepsis to potentially enhance immune responses and antimicrobial efficacy?
In light of the review article attached (Tilanus et al., PMID 41113323), there is some data reviewed supporting that fever is actually therapeutic. Four articles are of special interest in the review. Two are from the 70s, before sepsis was defined as it is today. Two are in the last 15 years, but o...
Would you consider levofloxacin graded challenge, extended IV aztreonam, or an alternative treatment in a patient with reported anaphylaxis to penicillin, fluoroquinolones, and cefuroxime with cavitary pneumonia secondary to Klebsiella and Pseudomonas?
The first and most important thing would be to establish whether the patient had a true penicillin (as well as other antibiotic) allergy since >90% of patients who think they are sensitive to PNC really are not. If it is established that the patient does have a PCN allergy, consultation with ID is a...
Do you routinely continue dual antibiotic coverage or de-escalate to monotherapy based on peritoneal fluid culture sensitivities in patients with relapsing pseudomonas aeruginosa peritoneal dialysis peritonitis after peritoneal catheter removal?
If the peritoneal dialysis catheter has been removed then I would de-escalate to monotherapy based on the fluid culture sensitivities. Monitor clinical response and obtain new fluid samples for analysis if any concern for persistent infection.
Would you start treatment for MAC in a patient with nodular bronchiectatic disease who has demonstrated radiographic progression but remains asymptomatic and smear-negative?
My default answer would be yes; this is a sign of progressive disease that will get worse without treatment. Having said that many things could be considered while making the decision, including patient preferences. First is there another cause? Does the patient have an exacerbation of bronchiectasi...
What duration of antibiotics do you use in patients with Actinomyces osteomyelitis, i.e., do you stop after 6 weeks or do you give a longer oral antibiotic course?
With actinomycosis at any site, I would treat for a longer duration than other causes of osteomyelitis. Bioavailable oral agent for 4-6 months after a couple of weeks of intravenous antimicrobials has been my practice.
Would you recommend early empirical anti-mold therapy for patients with severe influenza pneumonia admitted to the ICU to reduce the incidence of influenza-associated pulmonary aspergillosis?
Although this is a known complication, I would not place someone on mold prophylaxis given the lack of supporting data, the rarity of the complication, and the fact that—when considered early—it can usually be identified based on signs and symptoms suggestive of invasive mold infection. Prophylaxis ...
Are there any concerns with live vaccine innoculation and patients who are on denosumab?
This is a complicated question because while denosumab is a biologic therapeutic that has immunomodulatory effects on innate and adaptive immunity its association with serious infections complications appears modest. An increased rate of background infections and some increase in serious infections ...