49). Swine flu (H1N1) and Avian or “bird” flu (H5N1 and H7N9… Post author By Anonymous Post date September 5, 2025 Related Posts:49). Swine flu (H1N1) and Avian or “bird” flu (H5N1…The Spanish flu and influenza viruses H5N1 and H7N9…In both the 2009 swine flu and 1918 flu pandemics,… ← The definition of flocculation is: → 23). To understand Respiratory Diseases it is important to u…