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Human and animal vector-borne diseases, particularly mosquito-borne diseases, are emerging or re-emerging worldwide. Six Aedes invasive mosquito (AIM) species were introduced to Europe since the 1970s: Aedes aegypti, Ae. albopictus, Ae. japonicus, Ae. koreicus, Ae. atropalpus and Ae. triseriatus. Here, we report the results of AIMSurv2020, the first pan-European surveillance effort for AIMs. Implemented by 42 volunteer teams from 24 countries. And presented in the form of a dataset named “AIMSurv Aedes Invasive Mosquito species harmonized surveillance in Europe. AIM-COST Action. Project ID: CA17108”. AIMSurv2020 harmonizes field surveillance methodologies for sampling different AIMs life stages, frequency and minimum length of sampling period, and data reporting. Data include minimum requirements for sample types and recommended requirements for those teams with more resources. Data are published as a Darwin Core archive in the Global Biodiversity Information Facility- Spain, comprising a core file with 19,130 records (EventID) and an occurrences file with 19,743 records (OccurrenceID). AIM species recorded in AIMSurv2020 were Ae. albopictus, Ae. japonicus and Ae. koreicus, as well as native mosquito species. This study was funded by the Autonomous Province of Trento (Italy) under the project ‘Coordinated surveillance actions on invasive alien species and emerging vector borne diseases’; the City Health Office of the City of Zagreb, within the ‘Program for monitoring invasive mosquito species in the area of the City of Zagreb in 2020’; the Consejería de Economía e Infraestructura of the Junta de Extremadura and the European Regional Development Fund, a Way to Make Europe, through the research project IB16135; Dirección de Salud Pública (Gobierno Vasco), Project EU-LIFE 18 IPC/ES/000001 (Urban Klima 2050) y Programa Estatal de Vigilancia de mosquitos en puertos y Aeropuertos, del Ministerio de Sanidad (Gobierno de España); EMME-CARE project, which has been funded from the European Union’s Horizon 2020 Research and Innovation Programme (grant agreement ID 856612); Institute of Zoology under the project EVOLANTER (project no. 20.80009.7007.02). RL is funded by the Federal Ministry of Education and Research of Germany (BMBF) under the project NEED (grant no. 01Kl2022); LIFE CONOPS project (LIFE12 ENV/GR/000466), funded by the European Commission in the framework of the program LIFE + Environment Policy and Governance; Municipalities of Slovenia: City Municipality of Nova Gorica, City Municipality of Koper, Municipality of Izola, Municipality of Piran and Municipality of Ankaran; National Research, Development and Innovation Office (NKFIH grant numbers KH-130379, PD-135143, FK-138563 and K-135841). The research activity of KK was supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences and by the ÚNKP-20-5-PTE-597 New National Excellence Program of the Ministry for Innovation and Technology; Portuguese National Program for Vector Surveillance (REVIVE) and we are particularly grateful to the regional workgroup of Algarve for the monitoring activities; PR (19_ECO_0070) project ‘Aves y Enfermedades Infecciosas Emergentes: Impacto de las Especies Exóticas y Migratorias en la transmisión de Malaria aviar y el virus del Nilo Occidental – AvEIEs’ from ‘Ayudas Fundación BBVA a Equipos de Investigación Científica 2019’; project grant number 57 PCCDI/2018, grant agency ‘The Executive Unit for Financing Higher Education, Research, Development and Innovation’ (UEFISCDI) Romania, ‘Collegium Talentum Programme’ of Hungary, Eötvös Loránd University’s ‘Homeland higher education study grant’; Slovak Research Agency VEGA nr. 2/0140/21; Vector Control Needs Assessment in Cyprus, contracted by the World Health Organization (reference 2020/1040069-0); Veneto and Friuli Venezia Giulia Regions (Regional Prevention Plans ‘Entomological Surveillance of vector-borne diseases’ in the Veneto and Friuli Venezia Giulia Regions); the Institute of Public Health, Albania under the program of mosquitoes control in urban and coastal areas.

Additional file 1: Table S1. Locations and roosting sites of bats collected for the purpose of this study. Table S2. Primers used for pathogen screening of ectoparasites. Table S3. GenBank accession numbers for sequences obtained in this study.

Knowledge on the occurrence of pathogenic tick-borne bacteria Anaplasma phagocytophilum and Anaplasma ovis is scarce in sheep from Germany. In 2020, owners from five flocks reported ill thrift lambs and ewes with tick infestation. Out of 67 affected sheep, 55 animals were clinically examined and hematological values, blood chemistry and fecal examinations were performed to investigate the underlying disease causes. Serological tests (cELISA, IFAT) and qPCR were applied to all affected sheep to rule out A. phagocytophilum and A. ovis as a differential diagnosis. Ticks were collected from selected pastures and tested by qPCR. Most animals (n = 43) suffered from selenium deficiency and endoparasites were detected in each flock. Anaplasma spp. antibodies were determined in 59% of examined sheep. Seventeen animals tested positive for A. phagocytophilum by qPCR from all flocks and A. phagocytophilum was also detected in eight pools of Ixodes ricinus. Anaplasma phagocytophilum isolates from sheep and ticks were genotyped using three genes (16S rRNA, msp4 and groEL). Anaplasma ovis DNA was identified in six animals from one flock. Clinical, hematological and biochemical changes were not significantly associated with Anaplasma spp. infection. The 16S rRNA analysis revealed known variants of A. phagocytophilum, whereas the msp4 and groEL showed new genotypes. Further investigations are necessary to evaluate the dissemination and health impact of both pathogens in the German sheep population particularly in case of comorbidities.

Additional file 1. Complete batch of Borrelia miyamotoi sequences corresponding to the following genes: clpA, clpX, nifS, pepX, recG, pyrG, rplB, uvrA.

Additional file 2. Detailed values for all calculated statistical values.