Mike Russo
mikerusso.bsky.social
Mike Russo
@mikerusso.bsky.social
Peds ID in Philly.
Full time clinician.
Transplant, NTM, tick-borne infections, and antibiotic allergies.
Pro oral antibiotics and short durations
Anti cefdinir
(He/him)
#IDSky
*correlate of protection
April 3, 2025 at 2:54 PM
Also there’s no serologic correlate of mumps. IgG is more or less useless for telling whether someone is protected
April 3, 2025 at 2:45 PM
Documented two doses of MMR (or VZV) trump any serologic testing for measles or varicella IgG. Commerically available tests are not sensitive enough and will be false negative in about 1/3 of vaccinated individuals.
April 3, 2025 at 2:44 PM
Thursday?
January 10, 2025 at 1:41 AM
Been a long time reader of SBM but I missed this! Bookmarking to share with our learners. @andrewhaynes.bsky.social had a good discussion of this at IDWeek the other year too
December 17, 2024 at 9:34 PM
I will not abide by this feline slander
December 13, 2024 at 1:32 AM
Just because it has a name, doesn’t mean we have to try to kill it.
November 27, 2024 at 11:20 PM
What’s your azithromycin resistance rate these days? Pretty high up here
November 27, 2024 at 12:00 AM
8/8 None of this would have been possible without strong public health agencies and the people who work there. This is another example of what we stand to lose by appointing individuals that would gut and destroy the very agencies they’d lead.
November 20, 2024 at 10:05 PM
7/8 Subsequently, another cluster was identified in Alberta, Canada. This has all lead to wider knowledge of this issue and discussion on ways to move forward

academic.oup.com/ofid/article...
Donor-Derived Bartonella quintana Infection in Solid Organ Transplantation: An Emerging Public Health Issue With Diagnostic Challenges
In 2023, multiple cases of donor-derived Bartonella quintana, a louse-borne bacterium, were acquired in Canada and the United States from deceased donors w
academic.oup.com
November 20, 2024 at 10:05 PM
6/8 This led to rapidly identifying subclinical Bartonella quintana (probable) endocarditis in another organ recipient. Additional testing of banked donor specimens confirmed infection with B. Quintana, cinching the link.
November 20, 2024 at 10:05 PM
5/8 After a report to OPTN and an email on the Emerging Infections Network, CDC and local DOH’s rapidly responded and initiated an investigation involving content experts, local OPOs, and laboratory partners as well. This was an incredible team effort and public health at its best!
November 20, 2024 at 10:05 PM
4/8 An eventual excisional liver biopsy revealed vascular-proliferative lesions. The pathologist astutely was concerned for peliosis hepatis and performed a Warthin Starry stain which was teeming with bacilli and a Bartonella PCR was positive.
November 20, 2024 at 10:05 PM
3/8 Our index kidney transplant patient presented with fevers and abdominal pain and was found to have lesions in his liver, spleen, and vertebral bodies.
November 20, 2024 at 10:05 PM
2/8 This is a story of transplant ID, but more so a story of public health agencies and what we stand to lose. It was one of the proudest moments of my career to be involved with so many folks who came together to decipher these cases.
November 20, 2024 at 10:05 PM
Too late
November 14, 2024 at 1:04 AM
But don’t the data argue that there aren’t local (or accessible) ID specialists for many patients?
November 13, 2024 at 8:07 PM