1. Gottlieb MS, Schroff R, Schanker HM et al. Pneumocystis carinii pneumonia and mucosal candidiasis in previously healthy homosexual men. Evidence of a new acquired cellular immunodeficiency. N Engl J Med 1981; 305: 1425-31.

2. Masur H, Michelis MA, Greene JB et al. An outbreak of comunity acquired Pneumocystis carinii pneumonia. Initial manifestation of cellular immune dysfunction. N Engl J Med 1981; 305: 1431-8.

3. Rubinstein A, Sicklick M, Gupta A. Acquired immunodeficiency with reversed T4/T8 ratios in infants borns to promiscuous and drug addicted mothers. JAMA 1983; 249: 2350.

4. Oleske J, Minnefor A, Cooper R. Immune-Deficiency syndrome in children. JAMA 1983; 249: 2345.

5. WHO/FRM/NUT/CHD 98-2. UNAIDS/98-4. HIV and infant feeding, 1998.

6. Quian J, Picón T. Infección por VIH en pediatría. Tendencias en Medicina 1996; 9: 7-11.

7. Oxtoby MJ. Vertically acquired HIV in the United States. In: Pizzo PA, Wilfert CM (eds). Pediatric AIDS. 2nd ed. Baltimore: Williams & Williams, 1994: 3-20.

8. Feldman D, Ciraru-Vigneron N, Vasmant D, Leverge R. Bases pharmacologiques et methodologiques de l’etude des traitments préventifs de la transmission du VIH de la mére á l’enfant. Ann Pediatr (Paris) 1994; 8: 493-501.

9. Duff P. HIV infection in pregnacy. Semin Perinatol 1993; 17(6): 379-83.

10. Connor EM, Sperling RS, Gelber R, et al. Reduction of maternal - Infant transmission of HIV type I with zidovudine treatment. N Engl J Med 1994; 331: 1173-80.

11. Thaithumyanon P, Thisyakorn U, Limpongsanulak S et al. The potential role of intrapartum and neonatal zidovudine treatment in reduction of perinatal HIV-1 transmission. Conference record, 12th World AIDS Conference, Geneva. Abstracts 12156, p. 42, 1998.

12. Centers for Disease Control and prevention recomendations of the U.S. Public Health Task Force on the use of Zidovudine to reduce the perinatal transmission of HIV. MMWR 1994; 43 N° RR 11: 1-20.

13. CDC 1994 Revised classification system for HIV infection in children less than 13 years of age. MMWR 1994; 43 N° RR 12: 1-20.

14. Fowler M, Mofenson L. Progress in prevention of perinatal HIV-1. Acta Pediatr 1997; 421(Suppl): 97-103.

15. Crowen D, Steger K, Jarek C. HIV infection in Pregnacy: Epidemiology and Prevention of vertical transmission. Infect Control Hosp Epidemiol 1994; 15: 36-47.

16. Bobat R, Coovadia H, Coutsoudis A, Moodley D. Determinants of mother to child transmission of HIV type 1 infection in a cohort from Durban, South-Africa. Pediatr Infect Dis J 1996; 15: 604-10.

17. Peckham C, Newell M. HIV infection and mode of delivery. Acta Pediatr 1997; 421 (Suppl): 104-6.

18. Karlsson K, Masawe A, Urassa E, et al. Late postnatal transmission of HIV type 1 infection from mothers to infants in Dar es Salaam, Tanzania. Pediatr Infect Dis J 1997; 16: 963-7.

19. Leroy V, Newell ML, Dabis F, et al. International multicenter rooled analysis of late postnatal mother to child transmission of HIV-1 infection. Lancet 1998; 352: 597-600.

20. Ekpini E, Wiktor S, Satten G, et al. Late postnatal mother to child transmission of HIV-1 in Abidjan, Cote D’Ivore. Lancet 1997; 349: 1054-9.

21.

Kreiss J. Breast feeding and vertical transmission of HIV-1.Acta Pediatr 1997; 421(Suppl): 113-7.

22. Simonds RJ, Rogers M. Preventing perinatal HIV infection - How far have we come? JAMA 1996; 275(19): 1514-5.

23. Wiznia A, Crane M, Lanabert G, et al. Zidovudine use to reduce perinatal HIV type 1 transmission in an Urban Medical Center. JAMA 1996; 275(19): 1504-6.

24. Landers D, Sweet R. Reducing mother to infant transmission of HIV. The door remains open. N Engl J Med 1996; 334(25): 1664-5.

25. Gutiérrez S, Nin M, Quian J, et al. Perfil sicosocial de la familia del niño infectado con el VIH. Arch Pediatr Urug 1996; 67(2): 13-20.

26. Cooper ER, Nugent RP, Díaz C, et al. After aids clinical trial 076: the changing pattern of zidovudine use during pregnancy and the subsequent reduction in the vertical transmission of HIV in a cohort of infected women and their infants. J Infect Dis 1996; 174: 1207-11.

27. Mayans MJ, Dussaix E, Isopet J, et al. Maternal virus load during pregnancy and mother to child transmission of HIV type 1: The french perinatal cohort studies. J Infect Dis 1997; 175: 172-5.

28. Aleixo LF, Goodenow MM, Sleasman JW. Zidovudine administered to women infected with HIV type 1 and to their neonates reduces pediatric infection independent of an effect on levels of maternal virus. J Pediatr 1997; 130: 906-14.

29. Lambert G, Thea DM, Pliner V, et al. Effect of maternal CD4 cell count, aids and viral load on disease progression in infants with perinatally acquired HIV type 1 infection. J Pediatr 1997; 130: 890-7.

30. Husson RN, Lan Y, Kojima E, et al. Vertical transmission of HIV type 1: Autologous neutralizing antibody, virus load and virus phenotype. J Pediatr 1995; 126: 865-71.

31. Kliks SC, Wara DW, Landers D, Levy J. Features of HIV-1 that could influence maternal child transmission. JAMA 1994; 272: 467-74.