Let's start with the history of disease and move through to modern ramifications of factory farming Pandemics
---This is a long video (1hr) but it is full of all sorts of useful information.
Next, if you are buying herbs over the counter, be aware that most
of them are bogus. herbal fraud
I mention this because with something life threatening even a well known herbal treatment will fail if the herbal supplement is weak or bogus. here's a blog on the same topic labeling fraud.
Echinacea is partially an anti viral but don't use it as a tonic everyday. It has a unique class of harmless sacharides that mimic viral coats and turn on the immune system--but the immune system will start to recognize these as harmless if used over longer periods of time.
Echinacea is a very easily recognized tincture--- If it doesn't make your tongue tingle and go somewhat numb, it's worthless ----find a quality or home made one that really works if you want more than just a placebo effect. Use this if you believe you may have been exposed. There are both glycerin and alcohol extracts, and teas will work to some extent, all parts of the plant are possible to use, but the root is generally the most concentrated. Tablets or capsules are a very poor way to use this herb in my opinion, but crush the tablet or open the capsule if you must use this form.
Dr. Christopher had an "anti plague" formula that was complicated and time consuming to make. It is probably the most effective one still out there ANTI PLAGUE FORMULA
Here's a simpler formula, just about as effective-- strong yellow onions, garlic, horseradish, cayenne,, blend them all up in vinegar and put them on the counter and shake them every day --A dark jar to prevent light is preferred-If it's still there after two weeks (ie: you haven't used it all up as a salad dressing,)filter out the coarse sediment --- I use cheesecloth or a paint strainer cloth--
add other herbs to taste and make your treatment/prevention fun as you're eating your kale, lettuce, etc fresh from your garden
I know this has been said before, dairy is one food to avoid at all costs if your lungs are filled and you are having trouble breathing, not to mention the fact that dairy proteins are primary in confusing and misdirecting the immune system. Water, whole fruit and vegetable juices (with fiber) are the preferred nutrition during treatment of any disease.