Abstract: Some embodiments are directed to a retrofitting apparatus for use with a chair, the chair including a seat portion, a back portion that extends substantially perpendicular to the seat portion, and at least one armrest that connects to the seat or the back portion via an elongated connector. The retrofitting apparatus includes a screen made up of at least a dorsal panel that is at least in part substantially parallel to the back portion of the chair, and a first and second side panel protruding from a first and second edge of the dorsal panel, respectively, to allow the dorsal panel, first side panel, and second side panel to extend around the sides and the back of the user seated in the chair. The apparatus also includes at least one removable coupling structure configured to couple the armrest or the elongated connector to the screen.

Abstract: Some embodiments are directed to retrofitting apparatus for use with a chair, the chair including a seat portion, a back portion that extends substantially perpendicular to the seat portion, and at least one elongated connector that connects the seat portion and the back portion. The retrofitting apparatus includes a removable coupling structure connectable to the at least one elongated connector of the chair, the removable coupling structure including at least one connecting member configured to extend around a perimeter of a portion of the at least one elongated connector; and a cover connected to the coupling structure, the cover configured to project from at least a180 degree radius around at least a portion of the back portion of the chair, thereby extending around sides of a chair occupant so as to provide a physical barrier between the chair occupant and those disposed adjacent thereto.