Do we know how effective the 2021/22 influenza vaccine will be?

Question: 
Do we know how effective the 2021/22 influenza vaccine will be?
 
Answer: 
We won't know the effectiveness of the influenza vaccine until closer to the end of the influenza season when information about people who were infected, sick, and died is analyzed after the fact. The vaccine effectiveness this year will be difficult to measure due to all of the public health measures in place for COVID-19.
 
Even when there is a less-than-ideal match or lower effectiveness against one virus strain, the seasonal influenza vaccine can still provide protection against the other virus strains contained in the vaccine. If you do get influenza after getting vaccinated, the vaccine may reduce the severity of influenza-related complications. 
 
Date last reviewed: 
Wednesday, Nov 03, 2021