Prevention could be low-tech and cheap
So in the meantime, what about prevention?
Here in the States we can get 240 days worth of 2000-5000 IUs of Vit D3 for US$12.95. A year's worth for around $15-16, or certainly ~$20. That's a no-brainer.
Then Zinc 50mg and Selenium 200mcg, both quite inexpensive. All three have been shown by thousands of studies to strengthen the immune system, while many surveys show large portions of the population are deficient in all three. Do thousands of studies = the gold plated, double-blind trials which the FDA requires? In their eyes, no; but at this point who cares? A thousand University studies on D3+Zinc+Selenium is plenty of evidence. Sufficient D3 in the body positively affects ~2,000 different genes in humans. Low D3 is coincident with, and/or an indicator of, many major illnesses or syndromes. Any decent search on PubMed will show this.
Based on recent Amazon purchases:
D3 (Cholecalciferal) 2000IU 240 days = $13 x 1.5 = $20 for 1 year
Zinc Mono Methionine 50mg 120 days = $13 x 3 = $39 for 1 year
Selenomethionine 200mcg 365 days = $10
Total for 1 year = ~US$69
Then there are other less well-known immune enhancers:
Quercetin - cardiovascular health, antihistamine effect that may improve inflammatory and immune response, and supports respiratory health
N-Acetyl Cysteine - free-radical protection, glutathione precursor, supports healthy lung and liver functions
Sure, vitamins, minerals and other supplements are not shiny and hi-tech, but we need all the help we can get. Our first line of defense is our own immune system--we should use what is already at hand to strengthen it.