Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of Amendment No. 9 to the Schedule 13D originally filed on September 5, 2006 (including additional amendments thereto) with respect to the Common Stock of Rural/Metro Corporation.  This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated: October 5, 2009

ACCIPITER LIFE SCIENCES FUND, LP
By:	Candens Capital, LLC its general partner
By:	/s/ Gabe Hoffman
	Gabe Hoffman, Managing Member

ACCIPITER LIFE SCIENCES FUND II, LP
By:	Candens Capital, LLC its general partner
By:	/s/ Gabe Hoffman
	Gabe Hoffman, Managing Member

ACCIPITER LIFE SCIENCES FUND (OFFSHORE), LTD.
By:	Accipiter Capital Management, LLC its investment manager
By:	/s/ Gabe Hoffman
	Gabe Hoffman, Managing Member

ACCIPITER LIFE SCIENCES FUND II (OFFSHORE), LTD.
By:	/s/ Kris Beighton
	Kris Beighton, Joint Voluntary Liquidator

ACCIPITER CAPITAL MANAGEMENT, LLC
By:	/s/ Gabe Hoffman
	Gabe Hoffman, Managing Member

CANDENS CAPITAL, LLC
By:	/s/ Gabe Hoffman
	Gabe Hoffman, Managing Member

/s/ Gabe Hoffman

GABE HOFFMAN