Two Human Infections with Swine-Origin Flu Viruses and an Update on Southern Flu Activity

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Includes info on two novel influenza A human infections and an update on the southern hemisphere flu season.

August 26, 2024

	Influenza (Flu) 2023 - 2024 Flu Season

www.cdc.gov/flu

Two Variant Influenza Infections Reported in CDC’s FluView CDC reported two human infections with influenza A viruses that normally spread in pigs in last week’s FluView. These infections happened in Ohio (with an influenza A(H1N1) variant (A(H1N1)v) virus) and the Pennsylvania (with an influenza A(H1N2)v virus). Both patients reported exposure to pigs before they developed symptoms. Both had underlying medical conditions and were briefly hospitalized. Learn More

Southern Hemisphere Spotlight As the 2024 Southern Hemisphere flu season nears its end, data shows activity was similar to previous seasons. Flu activity in the Southern Hemisphere generally extends from April to September, continuing sometimes into October or November. While this year's season was consistent with trends from 2017‒2019 and 2022‒2023, some countries saw higher or earlier activity.  Learn More

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