Influenza. Denver Mysterious flu virus linked to death of Denver Physician Mary Robertson. RMN F 6, 1965 p.5 Doctors feel Denver outbreak reaching epidemic proportion. RMN N 3, 1967 p.20 Mild resurgence of Hong Kong flu noted in Denver. RMN Ja 12, 1972 p.8 Killer flu of 1918 recalled by those who fought epidemic in Denver. Post Ag 27, 1976 p.35 Victoria strain of influenza near epidemic in Denver. RMN F 20, 1976 p.5 Post F 20, 1976 p.3