Read this in HINDI Pneumonia is a common respiratory condition that mainly affects children. According to UNICEF statistics it accounts for around 15% of all under-five deaths and killing 920000 children in 2015. Caused by a bacterium called Streptococcus pneumonia the bacteria is opportunistic meaning you can get an infection if your immune system is weak or compromised due to a previous infection. As pneumonia is a life-threatening condition early diagnosis can help in the treatment and care. Often mistaken for cold or flu our expert Dr Gyanendra Agrawal Senior Consultant Respiratory & Critical Care unit Jaypee Hospital Noida shares