Medical History

[mkapstei at UCHICAGO.EDU]

If one includes in the Justinian plague the
entire plague cycle beginning in the time
of Justinian and lasting until about 750,
then you will find a reference in my
The Tibetan Assimilation of Buddhism, p. 42.
But if you are strictly limiting yourself
to 6th c., this will be a bit late, and
Tibet is not strictly speaking South Asia. 

Matthew T. Kapstein
Numata Visiting Professor of Buddhist Studies
The University of Chicago Divinity School

Directeur d'études
Ecole Pratique des Hautes Etudes, Paris