WEST BOYLSTON, Mass. (AP) _ A jail inmate infected with the hepatitis B virus slit his throat with a razor, spattering guards with his blood, and 10 corrections officers were given emergency shots, officials say.

The vaccine was flown in Wednesday and the shots were given at the Worcester County Jail and House of Correction, said John M. Flynn, the jail's deputy superintendent.

Ten more guards were scheduled to receive the shots today after a second emergency shipment arrived, Sheriff Theodore M. Herman said.

Since 1983, Worcester has had 150 cases of hepatitis B and seven deaths from the virus. The federal Centers for Disease Control has said Worcester's outbreak is the worst in history.

The inmate, Jarvis C. Chavis Jr., 30, slit his throat Sunday in his jail cell. He was transferred Wednesday in satisfactory condition from the University of Massachusetts Medical Center to Bridgewater State Hospital. Chavis was being held at the jail on a murder charge in the beating death of a man Sept. 14, Herman said.

The sheriff said any inmates who were in contact with Chavis will be allowed to receive the shots.

Jail officials decided two weeks ago to offer free, voluntary immunization to guards after another inmate came down with hepatitis B last month. Sixty of the jail's 180 guards have signed up to receive the series of three inoculations, Flynn said.