1. Bolyard EA, Tablan OC, Williams WW, Pearson ML, Shapiro CN, Deitchmann SD: Guideline for infection control in health care personnel, 1998. AJIC. 1998, 26: 289-354.
2. Centers for Disease Control and Prevention: Immunization of health-care workers: recommendations of the Advisory Committee on Immunization Practices (ACIP) and the Hospital Infection Control Practices Advisory Committee (HICPAC). MMWR. 1997, 46 (RR-18): 1-42.
3. Al-Mazrou YY, Al-Jeffri MH, Abdalla MN, Elgizouli SA, Mishskas AA: Changes in epidemiological pattern of Meningococcal disease in Saudi Arabia; Does it constitute a new challenge for prevention and control?. Saudi Med J. 2004, 25: 1410-1413.
4. Balkovic ES, Goodman RA, Rose FB, Borel CO: Nosocomial influenza A(H1N1) infection. Am J Med Technol. 1980, 46: 318-320.
5. Van Voris LP, Belshe RB, Shaffer JL: Nosocomial influenza B virus infection in the elderly. Ann Intern Med. 1982, 96: 153-158.