Influenza virus A subtype &#x7C; Upper respiratory specimen &#x7C; Microbiology
influenza virus a subtype &#x7c; upper respiratory specimen &#x7c; microbiology
Influenza virus A subtype &#x7C; Upper respiratory specimen &#x7C; Microbiology
influenza virus a subtype &#x7c; upper respiratory specimen &#x7c; microbiology