Influenza — Worldwide/Unknown
Information in this report is categorized by influenza transmission zones, which are geographical groups of countries, areas, or territories with similar influenza transmission patterns.
Summary
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– In the temperate zone of the northern hemisphere, influenza activity remained at interseasonal levels in most countries. However, influenza activity continued to increase across the countries in western Asia.
– In the Caribbean and tropical South American countries, influenza activity
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