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MFS/SUN LIFE SERIES TRUST - GOVERNMENT SECURITIES SERIES
Supplement to the Current Prospectus
The description of portfolio manager under the "Management of the Series Fund -
Investment Adviser" section is hereby revised as follows: Beginning January 1,
1998, Steven E. Nothern is the portfolio manager of the Government Securities
Series. Mr. Nothern, a Senior Vice President of the Adviser, has been employed
as a portfolio manager with the Adviser since 1986.
The date of this Supplement is January 1, 1998.
