Evolution and dispersal of encephalitic flaviviruses.

The pertussis vaccine may cause fever (as high as 106[degrees]F), pain, swelling, diarrhea, projectile vomiting, excessive sleepiness, high-pitched screaming (similar to the encephalitic screams associated with central nervous system damage), bouts of inconsolable crying, seizures, convulsions, collapse, shock, breathing problems, brain damage, and death.

Moreover, the researchers discovered that the neuron density in those six brains was just as low as in the five encephalitic AIDS brains.