| Chris Noble 2005-09-28, 8:30 am |
|
Alex wrote:
> So, the foetus is protected from viral infection by the placenta, is it??
>
> Counter 1:
>
> Cytomegalovirus Infection in Pregnancy
>
> When a pregnant woman becomes infected, she can pass the virus on
> to her fetus. In a minority of cases, this leads to serious illness in the
> newborn, lasting disabilities and even death.
>
> (Source: http://www.marchofdimes.com/professionals/681_1195.asp )
>
>
> Counter 2:
>
> Which viral infections have harmful affects on pregnancy?
>
> Viral infections in pregnancy are major causes of morbidity and mortality for
> both mother and fetus. Infections can occur in the neonate *transplacentally*,
> perinatally (from vaginal secretions or blood), or postnatally (from breast milk
> or other sources).
>
> Traditionally, the only viral infections of concern during pregnancy were
> those caused by rubella virus, cytomegalovirus (CMV), and herpes
> simplex virus (HSV). Other viruses now known to cause congenital
> infections include parvovirus B19 (B19V), varicella-zoster virus (VZV),
> coxsackieviruses, measles virus, enteroviruses, adenovirus, and *human
> immunodeficiency virus (HIV)*.
>
> (Source:
> http://www.doctorndtv.com/faq/detai...ve+harmful+affe
> cts+on+pregnancy?
> )
>
> Counter 3 (the piece de resistance):
>
> Human immunodeficiency virus (HIV) infection of human placenta.
>
> Transplacental transmission of HIV is an important route of neonatal infection.
>
> (Source: http://www.aegis.com/aidsline/1991/jul/M9170848.html )
>
>
> In other words, the person who so authoritatively claimed
> that HIV infection of the unborn does not happen because
> of the placental barrier, is hereby allowed to eat his hat.
>
> Alex
Before you get into hat eating consider who it was that was arguing
that vertical transmission of HIV should be 100% and who it was that
said "Viruses can and do pass through the placental barrier but it is
by no means 100% probable that the foetus will be infected."
Now do some research of your own rather than asking ignorant questions.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi
search for "vertical transmission rate" and
CMV
HSV
.....
Is there a 100% transmission rate for these viruses?
Why do you expect a 100% transmission rate for HIV?
Can you see a pattern between my "paradoxes" of gravity and your
"paradoxes"?
Chris Noble
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