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
Health Hazard Evaluation Program mid-sized business owners can request an OSHA consultation, and owners are required to correct identified hazards. In contrast, employers, employees, and unions from any sized business can request an HHE, and employers are not required to follow HHE program recommendations. The HHE Program provides technical assistance during federal emergencies. Staff are trained to respond to a natural disasters and biological, chemical, explosive, and radiological events. The HHE Program provided protection to emergency response workers in the September 11 attacks, anthrax attacks, Hurricane Katrina, Deepwater Horizon oil spill, and the Ebola epidemic. Health Hazard Evaluation Program The Health Hazard Evaluation (HHE)