new research was done. Literature searches did include CFS. The
results are reported in Chapter 4 Measles, Mumps, and Rubella
Vaccines. MMR vaccines are live attenuated meaning the virus is not
"dead," but merely weakened. Such vaccines are usually contraindicated
in populations with compromised immune systems.
In general, the problem with associating adverse vaccine events is
that the resulting issues may be merely coincidental, not causal or
exacerbating. Other times, perhaps because the populations studied
under the umbrella term of CFS are so heterogenous, associations were
found, but not considered statistically significant. Additional
research in more narrowly defined groups or subgroups may be more
revealing.
Autism Not Caused by Vaccines, IOM Report Concludes
By Michael Smith, North American Correspondent, MedPage Today
Published: August 25, 2011
There's convincing evidence that some vaccines can cause some adverse
effects, including seizures, brain inflammation, and fainting,
according to a new report from the Institute of Medicine.
But the evidence also favors rejecting the idea that some vaccines
cause type 1 diabetes or autism, the institute said.
The 647-page report, Adverse Effects of Vaccines: Evidence and
Causality, was commissioned in 2009 by the Health Resources and
Services Administration, which administers the Vaccine Injury
Compensation Program. The agency asked the institute to review the
evidence linking eight vaccines and a suite of possible adverse
effects that have been the subject of compensation claims.
The panel established four categories of causation, based on evidence that:
"Convincingly supports" a causal relationship, usually on the basis of
good epidemiological data and a clear mechanism of action.
"Favors acceptance" of a causal relationship, but is not firm enough
to be convincing.
Is "inadequate to accept or reject" a causal relationship.
"Favors rejection" of a causal relationship. Because it's impossible
to prove a negative, the committee did not have a category of evidence
that "convincingly" rejects a causal relationship.
The panel was not asked to say how rare potential various adverse
effects might be. But, they reported, "many of the adverse events we
examined are exceedingly rare in the population overall, and in most
instances any particular adverse event, be it arthritis, meningitis,
or any of the other vaccine-adverse events that the committee
considered, are not preceded by immunization."
The committee reported convincing evidence that:
Because of infection by the vaccine virus strain, the varicella zoster
vaccine can cause four specific adverse events -- disseminated
varicella infection, disseminated varicella infection with subsequent
infection resulting in pneumonia, meningitis, or hepatitis in people
with immunodeficiencies, vaccine strain viral reactivation, and
vaccine strain viral reactivation with subsequent infection resulting
in meningitis or encephalitis.
The MMR vaccine can cause measles inclusion body encephalitis in
people with compromised immune systems.
The MMR vaccine also is linked to febrile seizures in infants and
young children.
Six types of vaccines -- MMR, varicella zoster, influenza, hepatitis
B, meningococcal, and tetanus-containing vaccines -- can cause
anaphylaxis.
Any of the vaccines can cause syncope and deltoid bursitis.
Immunizations are a cornerstone of the nation=92s efforts to protect
people from a host of infectious diseases. Though generally very rare
or minor, there are side effects, or =93adverse effects,=94 associated
with some vaccines.
Importantly, some adverse events following a vaccine may be due to
coincidence and are not caused by the vaccine. To make this
distinction, researchers use evidence to determine if adverse events
following vaccination are causally linked to a specific vaccine; if
so, these events are referred to as adverse effects.
The Health Resources and Services Administration asked the IOM to
review a list of adverse events associated with eight
vaccines=97varicella zoster, influenza (except 2009 H1N1), hepatitis B,
HPV, MMR, hepatitis A, meningococcal, and those that contain
tetanus=97and evaluate the scientific evidence about the event=96vaccine
relationship.
The IOM committee appointed to this task was not asked to assess the
benefits or effectiveness of vaccines but only the risk of specific
adverse events.
For more complete information the full report is here:
http://books.nap.edu/openbook.php?record_id=3D13164
---------------------------------------------
Send posts to CO-CURE@listserv.nodak.edu
Unsubscribe at http://www.co-cure.org/unsub.htm
Too much mail? Try a digest version. See http://www.co-cure.org/digest.htm
---------------------------------------------
Co-Cure's purpose is to provide information from across the spectrum of
opinion concerning medical, research and political aspects of ME/CFS and/or
FMS. We take no position on the validity of any specific scientific or
political opinion expressed in Co-Cure posts, and we urge readers to
research the various opinions available before assuming any one
interpretation is definitive. The Co-Cure website <www.co-cure.org> has a
link to our complete archive of posts as well as articles of central
importance to the issues of our community.
---------------------------------------------
