"Chinese authorities reported that no unusual or new pathogens or unusual clinical symptoms were detected, including in Beijing and Liaoning, but only the previously mentioned general increase in respiratory diseases due to several known pathogens," the WHO said in a report.

The WHO on Wednesday expressed concern about the increase in cases of respiratory diseases and pneumonia in China, calling on residents to "take precautionary measures".

The WHO said in a statement posted on the X platform that it had "sent a formal request to China for detailed information on the rise in respiratory diseases and outbreaks of pneumonia among children," calling for "steps to reduce the risk of respiratory diseases."

The statement by the UN Health Organization came after a significant rise in the number of children with respiratory diseases and pneumonia was recorded in northern China.

The WHO added that it recommends that people in China "follow the necessary measures to reduce the risk of respiratory diseases."

These measures include "recommended vaccination, staying away from sick people, staying home when sick, testing and receiving medical care when needed, wearing masks when necessary, ensuring good ventilation, and washing hands regularly."