Annual Flu Vaccinations May Raise Risk of More Serious Infections
Other recent studies have shown that with each successive annual flu vaccination, the protection afforded by the vaccine appears to diminish. [19, 20] Research published in 2014 concluded that vaccine-induced protection against influenza was greatest among those who had NOT received a flu shot in the previous five years.  The flu vaccine may also increase your risk of contracting other, more serious influenza infections.
- Data shows people who received the seasonal flu vaccine in 2008 had "twice the risk of getting the HAN1"swine flu" compared to those who didn’t receive a flu shot.
- Compared to children who do not get an annual flu vaccine, those who receive influenza vaccinations have a three times higher risk of hospitalization due to influenza.
Research also shows that statin drugs — taken by 1 in 4 Americans over the age of 45 — may undermine your immune system’s ability to respond to the flu vaccine. [24,25,26] When you consider the low efficacy rate of the flu vaccine in any given year, getting vaccinated if you’re on a statin may well be a moot point.
Independent science reviews have also concluded that influenza vaccine does not appear to prevent influenza-like illness associated with other types of viruses responsible for about 80 percent of all respiratory or gastrointestinal infections during any given flu season. [27,28,29,30]
Vitamin D Works Better Than Flu Vaccine If Your Levels Are Low
Since then, a number of studies have come to similar conclusions. Most recently, a scientific review [5,6] of 25 randomized controlled trials confirmed that vitamin D supplementation boosts immunity and cuts rates of cold and flu.
Overall, the studies included nearly 11,000 individuals from more than a dozen countries. As reported by Time Magazine:
“… [P]eople who took daily or weekly vitamin D supplements were less likely to report acute respiratory infections, like influenza or the common cold, than those who did not …
For people with the most significant vitamin D deficiencies (blood levels below 10 [ng/mL]), taking a supplement cut their risk of respiratory infection in half.
People with higher vitamin D levels also saw a small reduction in risk: about 10 percent, which is about equal to the protective effect of the injectable flu vaccine, the researchers say.”
Like Cannell before them, the researchers believe vitamin D offers protection by increasing antimicrobial peptides in your lungs, and that “[t]his may be one reason why colds and flus are most common in the winter, when sunlight exposure (and therefore the body’s natural vitamin D production) is at its lowest …”
According to this international research team, vitamin D supplementation could prevent more than 3.25 million cases of cold and flu each year in the U.K. alone. Another statistic showing vitamin D is a more effective strategy than flu vaccine is the “number needed to treat” (NNT).
Overall, one person would be spared from influenza for every 33 people taking a vitamin D supplement (NNT = 33), whereas 40 people have to receive the flu vaccine in order to prevent one case of the flu (NNT = 40).
Among those with severe vitamin D deficiency at baseline, the NNT was 4. In other words, if you’re vitamin D deficient to begin with, vitamin D supplementation is 10 times more effective than the flu vaccine.
Cheers to your health-
Team Looking Vibrant