Summary

?The influenza season is largely finished in the temperate countries of the northern hemisphere with some persistent low level influenza transmission in eastern Europe and northern China. Most northern hemisphere temperate countries have now stopped weekly influenza data reporting.
?Some tropical countries are experiencing an increase or stable transmission of influenza viruses including countries in Central America, the Caribbean, South America and, in Sub-Saharan Africa.
?The influenza season has not yet started in the temperate countries of the southern hemisphere, although several countries including Australia, Chile, Paraguay and South Africa have reported small but sustained increase of influenza virus detections. Influenza A(H3N2) viruses are the most commonly detected type/sub-type in recent weeks in the Southern Hemisphere temperate region.