2. Glezen WP, Decker M, Perrotta DM: Survey of underlying conditions of persons hospitalized with acute respiratory disease during influenza epidemics in Houston, 1978-1981. Am Rev Respir Dis 1987 Sept; 136(3): 550-555
3. Canadian Communicable Disease Surveillance System: Disease specific definitions and surveillance methods. Bureau of Communicable Disease Epidemiology, Laboratory Centre for Disease Control, Health and Welfare Canada.
4. Waner JL, Todd S, Shalaby H, et al: Comparison of Directigen Flu-A with viral isolation and direct immunofluorescence for the rapid detection and identification of influenza A virus. J Clin Microbiol 1991; 29(3): 479-482
5. Douglas RG Jr: Prophylaxis and treatment of influenza. N Engl J Med 1990; 322(7): 443-450
6. Cartter ML, Renzullo PO, Helgerson SD, et al: Influenza outbreaks in nursing homes: how effective is influenza vaccine in the institutionalized elderly? Infect Control Hosp Epidemiol 1990; 11(9): 473-478
7. Diepersloot RJ, Bouter KP, Hoekstra JB: Influenza infection and diabetes mellitus. Case for annual vaccination. Diabetes Care 1990; 13(8): 876-882
8. Huang KL, Ruben FL, Rinaldo CR JR, et al: Antibody responses after influenza and pneumococcal immunization in HIV-infected homosexual men. JAMA 1987; 257(15): 2047-2050
9. Prevention and Control of Influenza: recommendations of the Immunization Practices Advisory Committee. Morbidity and Mortality Weekly Report. JAMA 1993; 269(14): 1778-1779
10. Prevention and Control of Influenza: Recommendations of the Immunization Practices Advisory Committee. MMWR Morb Mortal Wkly Rep 1992; 41(RR-9): 1-17
11. Gerace TM, Sangster JF: Influenza vaccination: a comparison of two outreach strategies. Fam Med 1988; 20(1): 43-45
12. Hutchison BG: Effect of computer-generated nurse/physician reminders on influenza immunization among seniors. Fam Med 1989; 21(6): 433-437
13. Weingarten S, Staniloff H, Ault M, et al: Do hospital employees benefit from the influenza vaccine? A placebo-controlled clinical trial. J Gen Intern Med 1988; 3(1): 32-37
14. Fedson DS: The influenza vaccination demonstration project: an expanded policy goal. Infect Control Hosp Epidemiol: 1990; 11(7): 357-361
15. Margolis KL, Nichol KL, Poland GA, et al: Frequency of adverse reactions to influenza vaccine in the elderly. A randomized, placebo-controlled trial. JAMA 1990; 264(9): 1139-1141
16. Sears SD, Clements ML: Protective efficacy of low dose amantadine in adults challenged with wild-type influenza A virus. Antimicrob Agents Chemother 1987; 31(10): 1470-1473
17. VanVoris LP, Betts RF, Hayden FG, et al: Successful Treatment of Naturally Occurring Influenza A. JAMA 1981; 245: 1128-1131
18. Statement on Influenza Vaccination for the 1992-93 Season. Can Med Assoc J 1992; 147(5): 673-676
19. U.S. Preventive Services Task Force: Guide to Clinical Preventive Services: an Assessment of the Effectiveness of 169 Interventions. Williams & Wilkins, Baltimore, Md, 1989: 363-368