Grey heron infected with West Nile virus A grey heron in the Noord-Holland-Noord region has tested positive for the West Nile virus. The virus is rare in the Netherlands. Bas van de Meulengraaf
New WHO Collaborating Centre hosted by RIVM combines laboratory preparedness and biorisk RIVM has been designated WHO Collaborating Centre for Laboratory Preparedness and Response for High Threat Pathogens and Biorisk by the World Health Organization (WHO).