Factors associated with vertical HIV transmission during two different time periods: the impact of zidovudine use on clinical practice at a Brazilian reference centre.

Abstract:

:Vertical HIV transmission rates and associated factors among mother-infant pairs cared for at a Brazilian reference centre from 1988 to 1993 (period 1), and from 1996 to 1999 (period 2) were evaluated. A total of 150 and 239 infants born to HIV+ mothers were enrolled at birth during these periods. No zidovudine prophylaxis was available in period 1. In period 2, 92.4% of the infants were exposed to zidovudine (54% started at delivery or in the post-natal period). During period 1, 25 of 129 infants were found to be infected (19.4%; 95% confidence interval [CI]=13-27) vs 20 of 232 (8.6%; 95% CI=5-13) during period 2 (P <0.01). After controlling for co-variables, this decline was due to zidovudine prophylaxis, either with complete (odds ratio [OR]=0.24; 95% CI=0.08-0.70) or incomplete (OR=0.37; 95% CI=0.17-0.81) regimens. Premature rupture of membranes (OR =3.2) and rhesus-negative blood type of the infant (OR=2.6) facilitated transmission. Although confirming the protective effect of zidovudine prophylaxis, alternative approaches aimed at pregnant women identified late are needed for this population.

journal_name

Int J STD AIDS

authors

Mussi-Pinhata MM,Kato CM,Duarte G,Paschoini MC,Bettiol H,Quintana SM

doi

10.1258/095646203322556156

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

818-25

issue

12

eissn

0956-4624

issn

1758-1052

journal_volume

14

pub_type

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