In possible sign for US, Chile’s flu hospitalizations were highest in three years, but vaccination helped

In possible sign for US, Chile's flu hospitalizations were highest in three years, but vaccination helped | CNN In a possible warning sign for the US and other Northern Hemisphere countries, Chile's 2022 flu season started much earlier than usual and brought more hospitalizations than during the pandemic, but the effectiveness of the vaccine against hospitalization was estimated to be almost 50%, according to a new study published by the US Centers for Disease Control and Prevention. Katherine Dillinger CNN

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The flu vaccine used in Chile, which included a match for the dominant A(H3N2) virus, was found to be 49% effective at preventing hospitalization. The shot used in the Northern Hemisphere includes the same virus clade and antigen as the Southern Hemisphere vaccine, the researchers say, so it may be similarly effective if the same virus dominates.

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