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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is Positive For Avidity Be A Matter Of Concern During Pregnancy?

17th week of pregnancy, I need help understanding my blood results for CMv - is it something i should be worried about - I have been told that the Avidity shows that I got the virus before the pregnancy and therefore I should not worry but I am still not convinced.... 14 march igg 7.0 Igm positive Avidity 0.87 15 april Igg 5.9 Igm positive Avidity 0.92 22 april Igg 5.9 pos Igm 0.6 neg thanks for any advice, info you many have. Zoe
Tue, 22 Dec 2015
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OBGYN,  's  Response
Hi there,
Please do not be worried.
To have a strongly positive avidity means that you have had the infection before and very unlikely that you will get it again during pregnancy. Having had CMV infection before makes it safe for the pregnant women as once infected she develops immunity to the CMV and will not be infected again.
The harm from CMV is when the pregnant women acquires a new infection during pregnancy and this can affect the fetus, but since you have had it before this makes it very safe for your baby.
So do not worry and regarding CMV infection as your baby is safe.
Hope I was able to clear your doubts.
Regards.
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Is Positive For Avidity Be A Matter Of Concern During Pregnancy?

Hi there, Please do not be worried. To have a strongly positive avidity means that you have had the infection before and very unlikely that you will get it again during pregnancy. Having had CMV infection before makes it safe for the pregnant women as once infected she develops immunity to the CMV and will not be infected again. The harm from CMV is when the pregnant women acquires a new infection during pregnancy and this can affect the fetus, but since you have had it before this makes it very safe for your baby. So do not worry and regarding CMV infection as your baby is safe. Hope I was able to clear your doubts. Regards.