2022-06-26-世界卫生组织-Influenza_Update_N°_422_12页_1mb

This influenza update analysis summarizes the WHO Influenza Update N°422 from June 27, 2022, based on data available as of June 12, 2022. The key points are:

• Context and Recommendations: The COVID-19 pandemic has influenced influenza surveillance by altering health-seeking behaviors, testing priorities, and capacities, requiring cautious interpretation of data. Countries are urged to monitor co-circulation of influenza and SARS-CoV-2, enhance integrated surveillance, increase influenza vaccination efforts to prevent severe disease, and have clinicians consider influenza in high-risk groups with guidance from national protocols.

• Global Influenza Activity: After a peak in March 2022, overall activity decreased globally. Increases were noted in parts of the Southern Hemisphere (e.g., Oceania and Southern Africa), while decreases occurred in Northern Hemisphere temperate regions and tropical zones. Influenza A (particularly H3N2 and H1N1pdm09) was predominant in most areas.

• SARS-CoV-2 Surveillance: Integrated surveillance is encouraged; COVID-19 positivity varied, with higher rates in regions like the Americas and Western Pacific, and ongoing monitoring is needed to understand co-circulation impacts.

• Regional Notes: Details include specific rises in detections in Australia, New Zealand, Southern Africa, and Chile, alongside declines in other regions like Europe, North America, and parts of Asia and Africa. Tropical areas remained largely low-level activity.

Data sources include FluNet, WHO GISRS, and sentinel surveillance systems, with limitations noted due to varying data quality.