What are the benefits or downsides to getting first set of vaccines at 6 weeks of age versus 8 weeks? we have a choice at our doctor's office.

No difference: No difference in starting vaccine series at 6 weeks vs 8 weeks of age. For more information about vaccines check out the Children's Hospital of Philadelphia Vaccine Education Center http://www.chop.edu/centers-programs/vaccine-education-center

No downsides: the choice is given to parents for giving a vaccine 2 weeks early to avoid missing a dose if their schedule conflicts with the vaccination schedule of their baby, wish you all wellness