Source: OT-Team(G), 央视新闻; 新京报
China's Center for Disease Control and Prevention (China CDC) on December 4 released national sentinel surveillance data for acute respiratory infectious diseases for Week 48 of 2025.
According to the report, influenza-like illness (ILI) accounted for 9.6% of all outpatient and emergency department visits at sentinel hospitals nationwide. Among respiratory specimens collected from ILI cases, the top three detected pathogens were influenza viruses (51.1%), rhinoviruses (5.3%), and respiratory syncytial virus (RSV) (3.5%). For hospitalized severe acute respiratory infection (SARI) cases, the leading pathogens were influenza viruses (19.0%), RSV (7.8%), and rhinoviruses (7.0%). The data also show clear regional differences between northern and southern China, as well as variation across age groups.
Comprehensive analysis of fever clinic visits, ILI consultations at sentinel hospitals, and multi-pathogen testing indicates that all detected pathogens are known and common; no novel pathogens or newly emerging infectious diseases have been identified.
Influenza viruses remain the predominant pathogen recently, with influenza activity continuing to rise nationwide. Overall, China is currently experiencing a high level of influenza circulation, and most provinces are at medium to high levels of influenza activity. Reports of school-based cluster outbreaks continue to increase, and positivity rates among children aged 5–14 are significantly higher than in other age groups.
RSV positivity is trending downward, with children aged 0–4 showing noticeably higher rates than other groups. Rhinovirus positivity continues to decline as well. Positivity rates for SARS-CoV-2 and other monitored respiratory pathogens remain low.
China has now entered its peak season for respiratory infectious diseases, with overall activity on an upward trajectory and influenza circulating at high levels. RSV and rhinoviruses also maintain moderate activity. To reduce transmission risks, authorities recommend that key institutions—such as childcare centers, schools, and elder-care facilities—strengthen health monitoring, promptly detect and manage cluster outbreaks, and minimize impact.
The public is advised to take the following personal protective measures:
Get vaccinated against influenza:
Individuals aged six months and above without contraindications are encouraged to receive the influenza vaccine. Vaccination is especially recommended for high-risk groups, including healthcare workers, adults aged 60 and above, preschool and school-age children, and people with chronic illnesses.
Wear masks appropriately:
Masks should be worn throughout medical visits. Mask-wearing is also advised in crowded public spaces or on public transportation, including airplanes, trains, and subways—particularly for the elderly and individuals with underlying health conditions.
Maintain good hygiene practices:
Cover your mouth and nose with a tissue, towel, or your elbow when coughing or sneezing. Practice frequent hand hygiene and avoid touching your eyes, nose, and mouth with unwashed hands to reduce the risk of pathogen transmission.
Adopt healthy lifestyle habits:
Maintain a balanced diet, exercise moderately, and get adequate rest to strengthen immunity. If symptoms such as fever or cough appear, wear a mask when interacting with others, ensure good indoor ventilation, and seek medical care as needed.
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