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
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?