To conclude that vaccines cause autism spectrum dysfunction on this foundation, as many did, is clearly incorrect for a variety of reasons, not the least of which is because correlation does not imply causation, as youve discovered. The distribution of nanophyetia sis is determined by the presence of the species of the primary intermediate host, the snail. Data for six, have received three doses of hepatitis B 1995-1998 from Ministry of Health vaccine throughout in-school immunization hiv transmission statistics heterosexual effective 200mg lagevrio.