How many days viral fever last?

The disease can spread rapidly in areas with inadequate treatment of sewage and drinking water. The infection is not likely to spread directly from one person to another; therefore, casual contact with an infected person is not a risk factor for becoming ill.

A healthy oxygen saturation level ranges between 95% and 100% . If a person's levels drop below this range, they may experience symptoms associated with a lack of oxygen, such as trouble breathing and confusion.

Hearing a crack or pop in your knees when you squat is quite common, and most of the time, it’s harmless. It’s usually caused by tiny bubbles of gas in your joint fluid popping when you move. But, if the cracking is painful or your knees feel swollen or unstable, it could be a sign of a problem like....