Global Journal of Epidemiology and Infectious Disease https://www.scipublications.com/journal/index.php/gjeid <p><strong><em>Global Journal of Epidemiology and Infectious Disease</em> </strong>is an international journal dedicated to the latest advancements in Epidemiology. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of Epidemiology and Infectious Disease.</p> en-US Global Journal of Epidemiology and Infectious Disease 2770-8675 Clinical Characteristics and Imaging Findings of Adult COVID-19 and Influenza-related Pulmonary Complications due to Methicillin-susceptible Staphylococcus aureus https://www.scipublications.com/journal/index.php/gjeid/article/view/798 <p><strong>Background</strong>: The pulmonary characteristics of <em>Staphylococcus aureus</em> (<em>S. aureus</em>) co-infection with respiratory viruses, such as SARS-CoV-2 and influenza virus, are still unclear.<strong> Case series</strong>: Two patients with methicillin-susceptible <em>S. aureus </em>(MSSA) infection in the lungs co-infected with either SARS-CoV-2 or influenza virus are reported. Case 1 was a 66-year-old woman who was admitted with SARS-CoV-2 infection. Her chest X-ray and computed tomography (CT) showed multiple cavity formations with infiltration shadows, and MSSA was detected from her sputum and blood, suggesting COVID-19-related bacterial pneumonia and pulmonary embolism. No catheters had been used, but she had skin eruptions and a history of SARS-CoV-2 vaccination. Ampicillin/sulbactam (ABPC/SBT) was administered, and she finally improved. Case 2 was an 87-year-old man with a history of atopic dermatitis who was admitted with moderate pneumonia, and influenza virus co-infection was found. He showed multiple cavitary shadows, and MSSA was isolated from both his sputum and blood. He was diagnosed with influenza-related bacterial pulmonary embolism. No catheters had been used, but he had a history of influenza vaccination. He was also treated by ABPC/SBT and finally improved. <strong>Conclusions:</strong> These cases suggest that MSSA showed affinity to the lungs when co-infected with either SARS-CoV-2 or influenza virus, and it presented as septic emboli without catheter use. We should consider MSSA infection when patients have SARS-CoV-2 or influenza virus co-infection, and multiple cavity formation and skin disorders are seen, even though they were vaccinated and no catheters were used.</p> Masafumi Seki Daishi Shimada Copyright (c) 2023 Global Journal of Epidemiology and Infectious Disease 2023-10-16 2023-10-16 1 6