Yes, I am also a biochemist who studied microbiology and "naturally vaccinated my son fully. After he came down with Pertussis, Measles and Chicken Pox. I began to read more broadly on this issue. My next two children were not vaccinated after much soul searching and grew up as very healthy youngsters. I have been advised by several Pediatricians who did not vaccinate their own children. Here is some reliable info from a medical doctor -