| |      | Dr. Halsey's presentation at the National Vaccine Advisory Committee Workshop on Thimerosal and Vaccines held in Bethesda, Maryland on August 11-12, 1999. | Slide 12 of 26 | Slide Notes: Which reference guideline for methyl mercury exposure should be used to evaluate ethyl mercury exposures from vaccines● WHO is the only organization that put a time period for exposure of more than one day, by giving a Provisional Weekly Tolerable Intake (PWTI). As noted by John Clements from WHO and Dr. Teely from the European Union, the WHO PWTI for pregnant women, nursing women, and infants would be one-fifth the PWTI for the general population. This makes the WHO guideline approximately the same as the EPA guideline. The Public Health Service has chosen the ATSDR guideline, which were based largely on the Seychelles data and allow for more liberal exposures. Does that mean that we should ignore the data from the more recently generated studies in the Faroe Islands● | |