Scientists at Cincinnati Children's Hospital find reason why elderly do not respond well to vaccines

https://medicalxpress.com/news/2020-07-helper-cell-vaccines-effective-seniors.html

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"These findings are the result of five years of work stemming from a long-standing collaboration between my lab and Dr. Claire Chougnet's lab, contributions from several faculty-level scientists, and particularly the hard work of one amazing former graduate student, Dr. Maha Almanan," Hildeman says.

The detectives ultimately traced excess IL-10 production to the cell type they dubbed Tfh 10. Then, in mouse models, they showed that simple blockade of IL-10 at the time of vaccination could restore the antibody response nearly to the level of young animals

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