Corticosteroid therapy in patients with MERS was not associated with a difference in mortality after adjustment for time-varying confounders but was associated with delayed MERS coronavirus RNA clearance. These findings highlight the challenges and importance of adjusting for baseline and time-varying confounders when estimating clinical effects of treatments using observational studies.
Single-dose baloxavir was without evident safety concerns, was superior to placebo in alleviating influenza symptoms, and was superior to both oseltamivir and placebo in reducing the viral load 1 day after initiation of the trial regimen in patients with uncomplicated influenza. Evidence for the development of decreased susceptibility to baloxavir after treatment was also observed. (Funded by Shionogi; JapicCTI number, 153090, and CAPSTONE-1 ClinicalTrials.gov number, NCT02954354 .).
Consecutive A (H3N2) influenza virus isolates from 2 influenza virus-infected immunodeficient patients treated with amantadine were examined using a novel polymerase chain reaction (PCR)-restriction analysis for resistance to this antiviral compound. The data indicate that immunodeficient patients may shed resistant viruses for prolonged periods and with different drug resistance mutations present at different times. This PCR-restriction technique allows rapid detection of amantadine- or rimantadine-resistant strains.
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