Publications by authors named "H A Usman"

: Coronavirus-19 (COVID-19) vaccines represent a significant milestone in the fight against coronavirus disease. Ongoing post-marketing surveillance and research are crucial for ensuring vaccine safety and effectiveness, aiding public health planning. : Our retrospective cohort study included Albertans five years and older and vaccinated with at least one dose of an approved COVID-19 vaccine between 14 December 2020 and 30 April 2022.

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Individuals with human immunodeficiency virus (HIV) infection are prone to developing persistent and unremitting anogenital warts (AGWs). To address this health condition, immunotherapy using tuberculin purified protein derivative (PPD) has been proven to be a promising novel and safe treatment for AGWs in HIV patients. Therefore, this study involved a case of a 21-year-old man with stage I HIV infection, possessing CD4 counts 548 cells/uL and routinely receiving HIV antiretroviral.

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Background: Acral and mucosal melanomas, the most common sun-shielded site melanoma subtypes in Asia and Indonesia, often yield poor prognoses. The invasion depth reflects their progressivity, and the pathogenesis is influenced by vitamin D receptor (VDR) status and CD8+ T-Lymphocyte amount. This study aims to determine the association between the invasion depth of acral and mucosal melanomas with their VDR and CD8+ immunoexpression.

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Background: In the United States, discourse on COVID-19 vaccination has become polarized, and the positions of public health officials are met with skepticism by many vaccine-hesitant Americans. This polarization may impact future vaccination efforts as well as clinician-patient relationships.

Methods: We interviewed 77 vaccine-hesitant patients and 41 clinicians about COVID-19 vaccination communication in primary care as part of a Veterans Affairs (VA) trial evaluating a vaccine-communication intervention.

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Langerhans cell histiocytosis (LCH) is a rare clonal disorder of the monocyte-macrophage system. There are 3 distinct types of LCH: multisystem type (MS), single-system multi-site (SS-m), and single-system single-site (SS-s). The disease is most common in young children, especially males.

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