Examples of viral infections that can cause pneumonia include: Respiratory viruses are often the cause of pneumonia. The most common cause of bacterial pneumonia is Streptococcus pneumoniae. Several types of infectious agents can cause pneumonia, including bacteria, viruses, and fungi.
This inflammation can eventually cause the air sacs to fill up with pus and liquids, causing pneumonia symptoms. The immune system’s reaction to clear the infection results in inflammation of the lung’s air sacs (alveoli). Pneumonia happens when germs get into your lungs and cause an infection. A productive cough helps eject remaining fluid from the lungs. Immune cells have begun to clear the infection. The breakdown of red blood cells causes a change in color, from red to gray. The red blood cells have begun to break down while immune cells remain. This makes the lungs appear red and solid in appearance. Red bloods cells and immune cells have entered into the fluid. Fluid filled with infectious organisms has accumulated in the air sacs. Lobar pneumonia can be further divided into four stages based off how it’s progressed: Each lung is made of lobes, which are defined sections of the lung. Lobar pneumonia affects one or more lobes of your lungs. These are the tubes that lead from your windpipe to your lungs.
It’s often localized close to or around your bronchi. Pneumonia may be classified based off the area of the lungs it’s affecting: Bronchopneumoniaīronchopneumonia can affect areas throughout both of your lungs. However, in walking pneumonia, the bacteria Mycoplasma pneumoniae most commonly causes the condition. Viruses and bacteria, like Streptococcus pneumoniae or Haemophilus influenzae, often cause pneumonia. The symptoms of walking pneumonia can include things like: However, walking pneumonia may require a longer recovery period. Their symptoms may feel more like a mild respiratory infection than pneumonia. People with walking pneumonia may not even know they have pneumonia. Walking pneumonia is a milder case of pneumonia. It’s more likely to occur if you have a swallowing problem, or if you’re too sedated from the use of medications, alcohol, or other drugs. Inhaling bacteria into your lungs from food, drink, or saliva can cause aspiration pneumonia. When people who are using a ventilator get pneumonia, it’s called VAP. Ventilator-associated pneumonia (VAP).This refers to pneumonia that’s acquired outside of a medical or institutional setting. It can be more serious than other types, as the bacteria involved may be more resistant to antibiotics. This type of bacterial pneumonia is acquired during a hospital stay. Pneumonia is further classified according to where or how it was acquired: It does not spread from person to person. You can contract fungal pneumonia from the environment. You can also get these types of pneumonia by coming into contact with surfaces or objects that are contaminated with pneumonia-causing bacteria or viruses. This means they can spread from person to person through inhalation of airborne droplets from a sneeze or cough. These sacs, called alveoli, fill with fluid or pus, making it difficult to breathe.īoth viral and bacterial pneumonia is contagious.
It leads to inflammation in the air sacs of one or both lungs. Pneumonia is an infection caused by bacteria, viruses, or fungi.
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