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The first symptom symptoms of an illness usually start with a spike in temperature temperature, I've got a thermometer, not sure it's an internal one though

I knew the importance of that during the COvid era, it saves a lot of trouble and emergency cases.

That’s great, which of the products.
My work place deals with medical equipment and I can say that the best product is trister product

HEREhaving a thermometer at home also saves the cost of spending and visiting hospital it help to detect any appearance of illness

Having a thermometer at home has helped me a lot too, especially when you have kids at home