Preventative support for virus and flu is different from what to do if you get sick. The better your health the better your recovery. Don't take Echinacea or other immune boosters when you are well. It can cause problems. Save it for when/if you get sick. 

People with chronic respiratory issues, especially older people in less than optimal health or on immune-suppressant drugs seem to be more at risk for Corona. But the virus can take hold of anyone with a weakened immune system.

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