Percorrer por autor "Corman, V.M."
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- Coordinated implementation of a conventional PCR assay to detect all Ebola and Marburg virus species in a European laboratory networkPublication . Heimsch, K.C.; Bleicker, T.; Best, T.D.; Presser, L.D.; Molenkamp, R.; Jääskeläinen, A.J.; Milewska, A.; Smahelová, J.; Baronti, C.; Pappa, S.; Tabain, I.; Cordeiro, Rita; Marsili, G.; Huik, K.; dos Reis, V. Pinho; Barzon, L.; Maes, P.; Drosten, C.; Corman, V.M.Background: Filoviruses, including Ebola and Marburg viruses, cause severe hemorrhagic fever in humans and primates. These viruses pose significant threats to public health, making rapid and sensitive detection critical for controlling outbreaks. We developed and validated a hemi-nested generic PanFilo assay to detect all Ebola virus species, Marburg viruses, and recently discovered bat filoviruses. This assay was deployed to 15 European laboratories and evaluated through testing of eight non-infectious samples. Objectives: Laboratories were asked to determine the detection limit of positive controls and test all samples using the assay provided. The deployed assay enables direct Nanopore sequencing of PCR products, by using tagged primers during the second round of PCR. Sequencing of the samples was carried out on a voluntary basis. Results: Multicenter validation revealed a 95 % limit of detection of 5309 RNA copies/μL for Ebola, 10,273 copies/μL for Marburg, and 2145 copies/μL for Mengla virus. In an implementation quality assessment, 93.3 % (84/90) of samples containing filovirus RNA were correctly identified and 100 % (30/30) of filovirus-negative samples were correctly identified. Thirteen laboratories sequenced PCR products, with nine identifying all positive samples correctly. Conclusion: The assay enables rapid and reliable detection of filoviruses, with sequencing capabilities for identifying both known and novel variants. This assay might be used for detection during the initial phase of an emerging filovirus outbreak, before a specific assay has been developed. However, our distribution across 15.
- Middle East respiratory syndrome coronavirus neutralising serum antibodies in dromedary camels: a comparative serological studyPublication . Reusken, C.; Haagmans, B.; Gutierrez, C.; Godeke, G.J.; Meyer, B.; Muth, D.; Raj, V.S.; Smits-De Vries, L.; Corman, V.M.; Drexler, J.F.; Smits, S.L.; Sousa, R.; van Beek, J.; Nowotny, N.; van Maanen, K.; Hidalgo-Hermoso, E.; Bosch, B.J.; Rottier, P.; Osterhaus, A.; Gortázar-Schmidt, C.; Drosten, C.; Koopmans, M.A new betacoronavirus-Middle East respiratory syndrome coronavirus (MERS-CoV)-has been identified in patients with severe acute respiratory infection. Although related viruses infect bats, molecular clock analyses have been unable to identify direct ancestors of MERS-CoV. Anecdotal exposure histories suggest that patients had been in contact with dromedary camels or goats. We investigated possible animal reservoirs of MERS-CoV by assessing specific serum antibodies in livestock. METHODS: We took sera from animals in the Middle East (Oman) and from elsewhere (Spain, Netherlands, Chile). Cattle (n=80), sheep (n=40), goats (n=40), dromedary camels (n=155), and various other camelid species (n=34) were tested for specific serum IgG by protein microarray using the receptor-binding S1 subunits of spike proteins of MERS-CoV, severe acute respiratory syndrome coronavirus, and human coronavirus OC43. Results were confirmed by virus neutralisation tests for MERS-CoV and bovine coronavirus. FINDINGS: 50 of 50 (100%) sera from Omani camels and 15 of 105 (14%) from Spanish camels had protein-specific antibodies against MERS-CoV spike. Sera from European sheep, goats, cattle, and other camelids had no such antibodies. MERS-CoV neutralising antibody titres varied between 1/320 and 1/2560 for the Omani camel sera and between 1/20 and 1/320 for the Spanish camel sera. There was no evidence for cross-neutralisation by bovine coronavirus antibodies. INTERPRETATION: MERS-CoV or a related virus has infected camel populations. Both titres and seroprevalences in sera from different locations in Oman suggest widespread infection. FUNDING: European Union, European Centre For Disease Prevention and Control, Deutsche Forschungsgemeinschaft.