Zero! And for those who are still not aware: There was never any Corona virus or any other virus for that matter. Those who supposedly died of Covid, died at the hospital because of the treatments (ventilators etc) and not because of any virus. Those "covid" symptoms was only detox symptoms, just like "flue" symptoms are too. Most people, now a days, are getting so much poison through food, water, air etc so the immune system has to work very hard to detox everything. And when it's getting too much for the immune system to handle, you are getting sick. As long as you eat healthy food, avoid toxic products, make sure that you have a strong immune system and take good care of your self you will never get sick. It's as simple as that.