The TWiVonauts review how the weather affects West Nile virus disease in the US, benefit of B cell depletion for ME/CFS patients, and an autoimmune reaction induced by influenza virus vaccine that leads to narcolepsy.

The TWiVbolans discuss the finding that human noroviruses, major causes of gastroenteritis, can for the first time be propagated in B cell cultures, with the help of enteric bacteria.

Vincent, Rich, Alan and Gabriel review the production of antibodies by B cells, and how high affinity antibodies are selected in the germinal centers of lymph nodes.