Mycoplasma pneumoniae positive without fever

Pediatric pneumonia refers to inflammation of the lungs caused by different pathogens or other factors. Most pneumonias result from an acute upper respiratory tract infection or bronchitis that spreads downward, or secondary to a respiratory infection such as measles.

Common pathogens of pneumonia are bacteria (pneumococcus, Staphylococcus aureus, Escherichia coli, etc.) and viruses (parainfluenza virus, influenza virus, adenovirus, etc.). Some children with pneumonia are caused by a bacterial infection secondary to a viral infection, known as "mixed pneumonia".

In recent years, due to the indiscriminate use and abuse of antibiotics, the dysbiosis of the microflora, and the number of pneumonia caused by drug-resistant strains such as Pseudomonas aeruginosa, Staphylococcus aureus and fungi has increased.

Generally speaking, the etiology of pneumonia is different, and its lesion location, pathological characteristics and clinical manifestations are different, but no matter what kind of pneumonia there are, there are the following five characteristics.

1. Fever. Clinically, there is no fixed pattern of fever in children with pneumonia, but most children with pneumonia have symptoms of high fever that does not go away. Some children may have a normal body temperature during the day, but a fever begins in the evening.

2. Frequent coughing. In the early stages, it is irritating dry cough.

3. Shortness of breath. It usually occurs after fever and cough. Systemic symptoms such as lack of energy, loss of appetite, irritability, mild diarrhoea, or vomiting are common.

4. Difficulty breathing. Children often have purple perioral and nasal lips, and breathing is rapid, up to 40 to 80 beats per minute.

5. Pulmonary rales. Doctors can hear moderate and fine crackles with a stethoscope.