Conclusions:
"Short sleep duration in the natural environment may negatively affect in vivo antibody responses to novel antigens, providing a possible explanation for observed associations of poor sleep with increased susceptibility to infectious disease."
Prather AA; Hall M; Fury JM; Ross DC; Muldoon MF; Cohen S; Marsland AL. Sleep and antibody response to hepatitis B vaccination. SLEEP 2012;35(8):1063-1069.