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Published on: July 6, 2013
Prevention strategies for congenital cytomegalovirus infection
Isabel Tol1, Paul T Heath2, Asma Khalil1,2
1St George's Hospital, University of London.
Purpose Of Review:
Cytomegalovirus (CMV) is the most common viral cause of congenital infection, occurring in approximately 1-2% of live births worldwide. Given our increasing knowledge of risk, advances in the identification of maternal infection, and the extremely limited options for the treatment of fetal infection, the prevention is a promising direction for research efforts. Recently, there have been several exciting studies assessing different ways of preventing congenital infection in the fetus and one in particular has focused on the use of valaciclovir.
Recent Findings:
A recent study reported a 71% reduction in vertical transmission of CMV with the use of oral valaciclovir following maternal primary CMV infection early in pregnancy. The clinical impact of this study could be enormous and it has particular implications for considerations around maternal serological screening in the first trimester of pregnancy. Further research assessing behaviour modifications during early pregnancy could also provide evidence for an effective primary prevention technique.
Summary:
Prevention of congenital CMV infection, whether primary, secondary or tertiary, is possible, however, there are barriers to its utilisation in a clinical setting. The main limitation is the requirement for early, effective and large-scale serological screening of mothers to detect asymptomatic primary infection.
Insights
Preventing congenital Cytomegalovirus (CMV) infection is crucial. Oral valaciclovir shows promise, reducing vertical transmission by 71% in a recent study, offering a new avenue for prevention strategies.
Area of Science:
- Virology
- Maternal-Fetal Medicine
- Infectious Diseases
Background:
- Congenital Cytomegalovirus (CMV) infection is the most common viral cause of congenital infection, affecting 1-2% of newborns globally.
- Limited treatment options for fetal CMV infection necessitate a focus on prevention strategies.
- Valaciclovir is being investigated as a potential preventative measure against congenital CMV.
Purpose of the Study:
- To review recent advancements in preventing congenital Cytomegalovirus (CMV) infection.
- To highlight the potential of valaciclovir in reducing vertical CMV transmission.
- To discuss the implications of new findings for maternal screening and behavioral interventions.
Main Methods:
- Review of recent studies on congenital CMV prevention.
- Analysis of a specific study investigating oral valaciclovir for maternal CMV infection.
- Consideration of behavioral modifications for primary prevention.
Main Results:
- A recent study demonstrated a 71% reduction in vertical CMV transmission using oral valaciclovir after maternal primary infection early in pregnancy.
- This finding has significant implications for first-trimester maternal serological screening.
- Behavioral modifications may also offer effective primary prevention techniques.
Conclusions:
- Prevention of congenital CMV infection is achievable through various strategies.
- Early and large-scale maternal serological screening is essential for effective clinical implementation.
- Valaciclovir represents a promising therapeutic option for preventing congenital CMV.
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