The 4th ISRV meeting on Correlates of Protection for Next Generation Influenza Vaccines (read more about it) took place from October 15 to 17th in Vienna. The meeting was co-organized by the International Society for Respiratory Viruses (ISRV) and the Ignaz Semmelweis Institute. The meeting focused on important regulatory and immunological questions regarding influenza virus correlates of protection. Drs. Doris Wilflingseder and Florian Krammer shared important insights into their research and several other members of the Ignaz Semmelweis Institute participated.