Pine processionary development, pine processionary caterpillars are highly irritating to the skin. Contact with the hairs of the caterpillar can cause severe rashes (urticaria) and eye irritation. Some individuals may have an allergic reaction to the caterpillar's hairs. 5th stage larvae can eject hairs when threatened or stressed; the hairs, which have the form of harpoons, then penetrate and irritate all areas of exposed skin nearby with an urticating protein. Allergic reactions may follow in susceptible individuals on subsequent exposure to the hairs. The pine processionary is an economic pest in coniferous forests in southern Europe. It is controlled to some extent
Canadian Science Centre for Human and Animal Health labs are built as a box-in-a-box; they do not border exterior walls and there are mechanical spaces above and below them. CSCHAH is a high-security facility. Security staff work closely with local police, RCMP and CSIS to ensure an appropriate level of security at all times. Only the lobby area is open to the public; all guests must be escorted within the secure area at all times. All staff working in the facility have Secret Level II security clearance. The Community Liaison Committee to the Canadian Science Centre for Human and Animal Health was struck by the ministers of Health