Sue.... oh, boy. It's been a LONG time since I had little ones to worry about. (Youngest will turn 22 in a couple of weeks)
First, for anyone who has a choice (is pregnant or nursing now), nursing an infant is protective and health promoting... babies who are nursing have much lower incidences of almost all contagious illness. However- we have to think about the possibility that the mother might become ill and unable to nurse sufficiently. And I think it's also important that we think about how we'd be able to get the infant to take juice, etc... so any nursing infant should be at least familiar with a bottle now.. while it's not anything more than a matter of convenience. I remember what it was like trying to get a totally-breastfed infant to take anything at all from an artificial nipple. NOT fun!
Next, remember that RAW honey should never be given to infants under 12 months, due to the risk of botulism. So, if you are making an elderberry syrup for babies, use pasteurized honey. Ditto if using honey as a cough soother (which it's quite effective for)
I'd make sure I had plenty of juices to use for hydration.. probably feeding them diluted.
There is a (herbal based) product called guaifenisen which is an expectorant... it helps liquify mucous so it can be expelled, relieving congestion. It can be found by itself, as well as part of multi-symptom relief cough meds. (It never made much sense to me to use it AND a cough suppressant at the same time!) The bottle says to "ask your doctor" about using it on children under 2, but I believe it would be safe. It helps make the mucous less sticky.. and anyone who has watched a small child try to cough up thick, sticky mucous from bronchitis knows how painful that is.
I'd probably make sure I had a humidifier, but also something to use for steam (not just cold mist), and eucalyptus essential oil.. again, for helping relieve congestion.
From my reading, it doesn't seem that a cytokine storm will be as much of a danger in these tiny ones... their immune systems aren't as completely developed as in older children and young adults. I'd probably use the elderberry myself, starting to give it as soon as anyone in the house showed any hint of symptoms. Probably a dose of 1/2 teaspoon or so for a 15 pound baby, every 4 hours or so.
I don't see any real reasons why you couldn't use turmeric, etc in small children if they began showing symptoms of a cytokine storm, but getting it into them might be a problem. Since elderberry seems to inhibit viral replication, and hence, if used early, may be able to keep the amount of virus (and hence, the body's reaction to it) low, my focus is going to be on using elderberry early and often.
Also, although we *suspect* that the 1918 flu caused cytokine storm, that's based on somewhat ambiguous information- the reports of people turning "blue", etc. But you'll see that in anyone who is dying of severe pneumonia.. and we don't KNOW that H5N1 will act the same as the 1918 strain did.
I'd probably keep hawthorne on hand (berries or flowers and leaves)... to use as a gentle support for the heart of anyone who is ill. It can be used in infants... and might be a way to help one who is severely ill and whose heart is showing the strain. I don't believe it would have any harmful effects, and it can easily be given as a tea, added to juice or however they'll take it.
Fortunately, babies don't generally have the problems that older people do as far as not being able to sleep when they're ill. They don't usually show the agitation or restlessness. However, catnip is a mild sedative when used as a tea, and might be appropriate for one whose sleep is constantly disturbed by coughing or apparent aches and pains.
One thing that seemed to come up in several of the commentaries on the 1918 flu was that people who lived in COLD houses, with lots of fresh air (or whose doctors or nurses insisted on keeping their windows open) did MUCH better than those who stayed in warm, closed rooms. Obviously, it's important to keep the patients warm... but apparently they shouldn't be breathing warm air. So.... we need to consider having plenty of lightweight blankets and warm nightwear so we can keep fresh air circulating without chilling the patient. They should be easily washed and hopefully something which dries quickly... fleece would seem to be ideal.
This is a terrifying subject! I sure hope we never need to test any of these ideas out!
Summerthyme