Pneumonia is a viral infection of the lungs. Bronchitis is an illness that affects the air passages that branch inside the lungs. Pneumonia is a more risky illness than bronchitis because it is a deeper infection. Medical professionals refer to it as walking pneumonia. Bacteria, viruses, and fungi are some of the causes. You can transfer pneumonia to another person if it is passed on by a virus or bacteria.
Pneumonia is also said as a lung infection that can range from mild to severe, so you should get checked out by a doctor. It happens when a sickness causes the air sacs in your lungs (called alveoli by your doctor) to fill with fluid or pus. This can make breathing in enough oxygen to enter your circulation difficult. This lung infection can affect anyone. However, kids under the age of two and individuals over the age of 65 are at more risk. It's possible that your immune system isn't powerful enough to fight it. One or both lungs might be affected by pneumonia.