Influenza Update N° 468

Overview

^{Published 27 March 2024 | For reporting week 11 of 2024, which ended 17 March}

Influenza

• Influenza activity continued to decline in most countries in the Northern Hemisphere. Influenza A(H1N1pdm09) and B viruses predominated, with differences by geographical area.
• In the Southern Hemisphere, influenza activity is generally low with a mix of influenza A and B viruses detected. Some countries in South America continue to report elevated activity and influenza A viruses were most commonly detected.

SARS-CoV-2

• SARS-CoV-2 activity remains elevated in South America and in some countries in Central America and the Caribbean, Eastern Europe, Central Asia, Western Africa, South East Asia, and Oceania. Increases in activity have been reported in South America, and Eastern Europe since the prior week.

WHO encourages countries, especially those that have received the multiplex influenza and SARS-CoV-2 reagent kits from GISRS, to conduct integrated surveillance of influenza and SARS-CoV-2 and report epidemiological and laboratory information in a timely manner to established regional and global platforms. The guidance can be found here: https://covid.comesa.int/publications/i/item/WHO-2019-nCoV-integrated_sentinel_surveillance-2022.1.