https://www.indiatoday.in/science/story/covid-19-influenza-b-virus-extinct-india-vaccine-who-cdc-1869131-2021-10-25
There has been a notable reduction in influenza cases since the SARS-CoV-2 pandemic.
influenza b viruscovidleadextinction
https://www.fda.gov/vaccines-blood-biologics/vaccines/influenza-virus-vaccine-quadrivalent-types-and-types-b
List of Influenza Virus Vaccine, Quadrivalent, Types A and Types B
influenza virusvaccinequadrivalenttypesb