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Question

The most common agent responsible for community acquired pneumonia is:

The correct answer is
Streptococcus pneumoniae

Common Agent of Community Acquired Pneumonia

The most frequent bacterial cause of community acquired pneumonia (CAP) is Streptococcus pneumoniae.

This bacterium, also known as pneumococcus, is responsible for a significant proportion of CAP cases diagnosed worldwide.

While other organisms like Mycoplasma pneumoniae and Staphylococcus aureus can cause pneumonia, they are less common as primary agents of CAP compared to Streptococcus pneumoniae. Legionella haemophilia is not a typical or common cause.

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Important Questions from Pneumonia

  1. According to the WHO clinical criteria, which of the following clinical signs are indicative of 'severe pneumonia or very severe disease' in children aged 2 months to 5 years? 

    1. Convulsions 

    2. Lower chest indrawing 

    3. Inability to feed 

    4. Stridor 

    Select the correct answer using the code given below.

  2. Which one of the following antigens is commonly associated with causation of Farmer's lung?
  3. All of the following are extrapulmonary manifestations of mycoplasma infection EXCEPT:
  4. Which of the following is/are the common infectious syndrome(s) associated with klebsiella pneumoniae?
    1. Pneumonia
    2. Intra-abdominal infections
    3. Hepatitis
    Select the correct answer using the code given below:
  5. Consider the following statements about staphylococcal pneumonia:
    1. Three-fourth of the patients are below the age of one year.
    2. Pneumatoceles are common.
    3. It is the commonest cause of empyema in a child below two years of age.
    4. The condition is easily amenable to treatment in the outdoors.
    Which of the above statements are correct?
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