Cytomegalovirus (CMV) and SIDS
Articles hit the news the past couple of weeks regarding cytomegalovirus (CMV) and SIDS. The news refers to a German study. More information follows. We have received many e-mail messages asking for more information. The public has been on an information roller coaster, the result of an explosion of medical reports, each heralding a "breakthrough in SIDS research." We need to help people separate myth from fact and risk factor from cause. We will post information as it becomes available to us.
Please keep the following in mind:
- When it comes to media coverage of SIDS, we often feel a sense of frustration in being confronted with misleading headlines, announcements of so-called breakthroughs and statements taken out of context.
- Please read the article, "Mass Media's" Role in SIDS Education, at <http://sids-network.org/media.htm>.
- Please read the "Medical Professional Comments" below regarding this article.
We are currently gathering more information about this specific research and will keep you updated.
Medical Professional Comments regarding this article:
Infants are exposed to many viruses in the first year of life. This report is not reporting a cause and effect for SIDS.
Researchers find link between common virus and crib death
Copyright (c) 1998 Reuters News Service
Last updated 09/27/1998, 12:01 a.m. MT
LOS ANGELES (Reuters) - A common virus best known for blinding AIDS patients may cause some cases of crib death, which claims the lives of more babies than any other problem, researchers said Saturday. A German university study, presented at an American Society for Microbiology conference in San Diego, found a link between crib death, also known as sudden infant death syndrome (SIDS) and the common cytomegalovirus (CMV).
SIDS in the United States claims the lives of about one in 1,000 infants during the first year of life, with many cases occurring after just three months. It is the leading cause of death among infants before their first birthday. Doctors have searched for years to find the definitive cause of SIDS with no real success.
It is known that babies exposed to cigarette smoke, both in the womb and after birth, are more likely to die of SIDS. Babies put to sleep on their stomachs are also more likely to die, and campaigns to get parents to put babies down on their backs have resulted in a dramatic decrease in the number of SIDS deaths.
Earlier studies have also found a link between respiratory infections and SIDS.
Following on this, researchers at the University of Erlangen study looked for traces of CMV in babies that had died of SIDS, also sometimes known as crib death. They found the DNA of the virus in just under 18 percent of SIDS victims, compared to 7.1 percent of infants that had not died. CMV, which causes serious lung and brain disorders in premature babies, is transmitted from mother to baby during pregnancy in about 1 percent of births. Every year about 1 percent of children and young adults acquire the virus, which remains with them for life.
The CMV virus can be transmitted easily through blood transfusions and sexual contact and is most problematic in people with weak immune systems such as infants, organ transplant patients and those with AIDS.
While the researchers said CMV may cause some cases of SIDS there was no way of determining if the infants were infected during pregnancy or after birth and if that had any relation to the incidence of SIDS.
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