Oak processionary posed a health threat. In April 2018, an outbreak of the caterpillars was reported across Greater London and surrounding areas. The moth is now fairly common in Belgium, notably in the Campine but also elsewhere, with fluctuating population numbers from year to year. In 2007 infestations in the Belgian province of Limburg were so acute that soldiers were deployed to burn them. In the Netherlands, the caterpillars are dealt with by biological pest control. Local authorities use, like in Germany, fluids containing bacteria that are toxic only to the caterpillars. These fluids are sprayed onto the infected trees. Furthermore, an
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