In episode #93 of the Infectious Disease Puscast, hosts Dr. Daniel Griffin and Dr. Sarah Dong review recent medical literature, covering a wide range of viral, bacterial, fungal, parasitic, and miscellaneous topics.
Key viral discussions include a study from an Mpox outbreak in Kenya where 61% of suspected cases were positive for Varicella Zoster Virus (VZV), underscoring the need for a broad differential diagnosis. Another significant paper explores the therapeutic use of the HPV vaccine, finding it can enhance viral clearance and reduce the recurrence of cervical lesions in already-infected women, challenging current guidelines. The bacterial section highlights a study confirming that delays in surgical intervention for native joint septic arthritis lead to significantly worse outcomes, including higher mortality. In fungal diseases, a review of dimorphic mycoses reveals their geographic spread far beyond traditionally recognized endemic areas. Additionally, the hosts discuss the controversial use of corticosteroids in non-HIV Pneumocystis pneumonia, where higher doses were linked to increased mortality, and a study connecting climate change variables to the evolution of resistance in Candida auris. The parasitic section covers a "One Health" approach in Madagascar that successfully reduced Taenia solium by treating both pigs and humans, and an analysis of the transplacental transfer of antimalarial drugs. Finally, the miscellaneous section features a paper urging infectious disease providers to advocate for plant-based diets as a strategy to combat both climate change and negative health outcomes.
Puscast #93: Key Medical Literature Reviewed
2:12 Overlapping Rash Illnesses: A study during a 2024 Mpox outbreak in Kenya revealed a high prevalence of Varicella Zoster Virus (VZV). 61% of 277 suspected Mpox cases tested positive for VZV, with some co-infections, highlighting the critical need for a broad differential diagnosis for rash illnesses.
3:52 Early HIV Treatment Reduces Cancer Risk: In a Dutch cohort, starting antiretroviral therapy (ART) within 12 months of HIV acquisition was found to reduce the risk of non-AIDS-defining malignancies by approximately 40% compared to starting later.
6:10 The HPV Vaccine as a Therapeutic: A systematic review challenges the idea that the HPV vaccine is only for prevention. It found that vaccinating HPV-positive women significantly enhanced viral clearance and, when given after conization surgery, lowered the recurrence risk of high-grade cervical lesions (CIN2+) by 87%.
11:05 Delays in Septic Arthritis Surgery are Harmful: A multicenter retrospective study confirmed that delaying surgical intervention for native joint septic arthritis is associated with significantly worse outcomes, including increased one-year mortality and higher rates of treatment failure.
13:02 High-Dose Steroids May Worsen Outcomes in non-HIV PJP: In a study of non-HIV immunocompromised patients with Pneumocystis jirovecii pneumonia (PJP), greater cumulative exposure to corticosteroids was associated with a higher 90-day mortality rate, without clear benefits for respiratory outcomes like preventing intubation.
21:08 Dimorphic Fungi are More Widespread Than Taught: A study using a large US commercial insurance database from 2007-2016 showed that dimorphic mycoses like histoplasmosis, blastomycosis, and coccidioidomycosis are consistently diagnosed far outside their historically defined "hyperendemic" regions, necessitating an updated understanding of their geographic distribution.
23:55 Climate Change and Candida auris Resistance: Researchers found a strong association between climatic variables and the presence of resistance genes in Candida auris, suggesting that climate change is a significant factor in shaping the pathogen's adaptation and spread.
25:02 "One Health" Approach Controls Tapeworm: A public health program in Madagascar successfully reduced Taenia solium (pork tapeworm) infections by implementing a "One Health" strategy that included vaccinating and treating pigs alongside mass drug administration for the human population.
27:58 Antimalarial Drugs Cross the Placenta: A study examining malaria treatment in pregnant women found that all antimalarials tested crossed the placenta, but in highly variable amounts. Piperaquine achieved near-maternal concentrations in the neonate, while lumefantrine transfer was very low, underscoring the importance of studying drug levels in newborns.
34:17 Advocating for Plant-Based Diets to Fight Climate Change: A perspective paper in OFID argues that infectious disease providers are in a "privileged position" to provide dietary counseling and should advocate for plant-based diets as a dual strategy to combat climate change (driven partly by livestock production) and improve patient health outcomes.