Hi again: As part of trying to chase this down,
I contacted the mailing list, here's their reply.
Dear Mr.
Thank you for your email.
We have run a battery of tests, and can assure you that no virus was in fact included with the MEMRI email. For an undetermined reason, avast! is incorrectly indicating to many of its clients that MEMRI emails contain a virus. We are working to rectify this issue, but please know that no virus is in fact present.
Please let us know if you have any further questions.
Sincerely,
Elliot Zweig
MEMRI