http://news.mit.edu/2017/studies-explain-link-between-autism-severe-infection-during-pregnancy-0913 A 2010 study that included all children born in Denmark between 1980 and 2005 found that severe viral infections during the first trimester of pregnancy translated to a threefold risk for autism, and serious bacterial infections during the second trimester were linked with a 1.42-fold increase in risk. TheseContinue Reading