Attention deficit hyperactivity disorder (ADHD) and learning disorders are associated with the bacteria Borrelia burgdorferi and Streptococcus, and with HIV and enterovirus 71. Febrile seizures due to human herpesvirus 6 or influenza A are a risk factor for ADHD. Viral infections during pregnancy, at birth, and in early childhood are risk factors for ADHD.
Alzheimer's disease is associated with the bacteria Chlamydia pneumoniae and Helicobacter pylori, and with the protozoan parasite Toxoplasma gondii. Herpes simp... more