The Centers for Disease Control and Prevention (CDC) recently released a summary of its investigation into the deaths of dozens of people with the coronavirus that the CDC said may have been caused by the use of a vaccine against human immunodeficiency virus (HIV) in the United States.
The CDC did not immediately respond to a request for comment on this article.
However, the CDC’s summary, published by the National Institutes of Health (NIH), is a summary for a scientific review that the agency conducted in the wake of the release of the study’s final report.
In its summary, the agency says that it did not find any evidence that any vaccines used in the study “were causally related” to the deaths.
That conclusion is not surprising given that the National Academy of Sciences, which conducts the review, did not conclude that any vaccine could be causally linked to any deaths, and it is also not a conclusion the FDA or any other federal agency would want to draw.
But the CDC summary is also important, because it sets the record straight about the potential risks of vaccines.
“As we now know, the risk of vaccines causing disease increases with age, and this increase is not associated with the use by any vaccine-using population,” the summary says.
For the record, it also says that the risk increases “with increasing age,” and that the risks of vaccine-induced disease “are much less than those of infectious disease.”
The summary also says there are risks of the vaccine not being as effective as it is supposed to be, which it defines as “that a vaccine administered to a non-adjuvanted susceptible population may be less effective than a vaccine intended for that population.”
For example, the summary cites studies that show that, even after one year of vaccination, there are significant differences in the vaccine effectiveness between the elderly and the younger population, which is what caused the study to conclude that the efficacy of the vaccines was “moderate” and “relatively minor.”
It says that these differences are due to differences in how people are inoculated against the virus, which makes it harder for the vaccine to work.
It also says the results of studies that looked at the effectiveness of a single dose of the polio vaccine in children and teens suggest that, “the vaccine may be unlikely to protect against the full spectrum of vaccine reactivation that occurs with older ages.”
It is important to note that this summary does not make any definitive claims about the vaccine’s safety.
The CDC does not say that the vaccine is completely safe.
However a study published last year in the journal JAMA Pediatrics concluded that the safety of the MMR vaccine is “not in doubt” and that it is “more likely than not” that the vaccines safety is “high.”
But it says that there are a lot of things to be concerned about, including the potential side effects that are known to be associated with vaccine use.
While the summary does state that the use or lack of use of vaccines is not a good predictor of death, it does note that the data on which it relies is limited.
“This summary does provide some information about how the vaccination and age effects are associated with death and disease,” it says.
The summary does also note that “the mortality rate from vaccine-related adverse events has not changed much over time, although it has increased from about 2 deaths per 100,000 population in 2004 to over 8 deaths per 1,000 in 2016.”
This study, however, is not the only one to look at the potential harms of vaccines and the possible benefits.
In a separate review published in February, the Journal of the American Medical Association looked at a wide range of studies looking at the safety and efficacy of vaccines, including studies of the flu vaccine.
And it concluded that “no evidence supports the notion that the flu vaccination has been associated with a decrease in the risk for flu-related morbidity or mortality.”
“The evidence in support of the safety, effectiveness, and potential benefits of flu vaccines is insufficient,” the journal wrote.