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Contents and Lead Article

Contents
- Estimates of HIV prevalence among pregnant women in New Zealand
- Meningococcal disease in 2001 reaches highest incidence to date
- New Zealand Paediatric Surveillance Unit Update
- Three HUS cases in Rotorua
- Surveillance and control notes
Lead Article:
Estimates of HIV prevalence among pregnant women in New Zealand
The development of interventions that markedly reduce the chance of
perinatal transmission of HIV from an infected pregnant women to her
baby have spurred interest in improving detection of HIV among such
women. On the basis of reports of known births to HIV infected women
during 1998-2001, and the number of infected children born in New
Zealand who have developed AIDS, an overall prevalence of HIV among
women giving birth was estimated. This estimate is 1.5 to 4.0 per 10
000, with 45 to 80% not diagnosed before giving birth. Based on these
figures, if all these infections were detected, an additional four to
18 pregnant women would be diagnosed with HIV annually and could be
offered effective antenatal care. If interventions to prevent perinatal
transmission were taken up by all of these women, it is estimated that
on average five perinatal infections could be prevented every three
years. We recommend that rapid consideration be given to the benefits,
risks, and costs of moving to a policy where all pregnant women are
offered and recommended to have a voluntary HIV test. In the meantime
maternity carers should discuss HIV with all pregnant women. An initial
prevalence study of HIV using neonatal blood spots should be undertaken
to assess the true prevalence among women giving birth. In the future
regular public health monitoring using neonatal blood spots, and
ongoing collection on the number of women given birth known to be
infected, will be required to assess the effectiveness of this policy.
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