Hot weather, which causes dehydration and fatigue, creates favorable conditions for bacteria and viruses to invade the body, leading to pneumonia.

Avoid direct airflow, add humidity, and don't abruptly expose babies to outdoor temperatures.

Using air conditioning in crowded rooms can easily spread respiratory illnesses. If I use a fan instead, will my risk of getting sick decrease? (Tran Nam, 42, TP HCM)

I easily get a sore throat, cough, and stuffy nose when I enter an air-conditioned room immediately after being in the sun. What is the reason? (Duong Minh, 31, Can Tho City)

Blue-tinged skin, chest retractions, fatigue, and lethargy are warning signs of respiratory distress in children, requiring prompt medical attention.