ANATOMY

Detailed explanation-1: -Pneumonia is caused by several infectious agents, including viruses, bacteria and fungi. The most common are the following. Streptococcus pneumoniae is the most common cause of bacterial pneumonia in children. Haemophilus influenzae type b (Hib) is the second most common cause of bacterial pneumonia.

Detailed explanation-2: -The two most common causes of pneumonia are from viral pathogens or bacterial pathogens. Some types of bacterial pneumonia can be prevented with vaccines, such as the aggressive bacteria Strep. Pneumoniae, prevented with the pneumococcal vaccine.

Detailed explanation-3: -Pneumonia is a serious infection of the lungs caused by various bacteria, viruses and fungi. It can be mild and sometimes even prove fatal. It affects people with weakened immune systems, older people above 65 years of age, infants and young children. Pneumonia can be bacterial, viral or mycoplasmic.

Detailed explanation-4: -Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.