DJ, ONE person in NL was found to be-most likely-infected with Lassa fever. He returned from West Africa. (No links yet in English)
In 2019 NL had two imported cases;
https://www.ecdc.europa.eu/en/publications-data/rapid-risk-assessment-cases-lassa-fever-netherlands-ex-sierra-leone or https://www.ecdc.europa.eu/en/publications-data/rapid-risk-assessment-cases-lassa-fever-netherlands-ex-sierra-leone ;
On 20 and 24 November 2019, respectively, the Dutch public health authorities confirmed two imported cases of Lassa fever from Sierra Leone. Both were Dutch healthcare workers who worked in a rural hospital in Sierra Leone. EU/EEA travellers or EU/EEA citizens residing in Sierra Leone should be informed of the risk of exposure to Lassa virus, particularly in areas where Mastomys spp. rodents are present and during the main transmission season (roughly from November until April).