{"entity": "researcher", "timestamp": "2026-08-11T14:19:17.898Z", "family": "Yousef", "given": "Jamil", "initials": "J", "orcid": "0000-0001-5915-1258", "affiliations": ["Division of Affinity Proteomics Department of Protein Science KTH Royal Institute of Technology SciLifeLab Stockholm Sweden."], "links": {"self": {"href": "https://publications.scilifelab.se/researcher/86be17c932614797a876bb55c7ce566e.json"}, "display": {"href": "https://publications.scilifelab.se/researcher/86be17c932614797a876bb55c7ce566e"}}, "publications": [{"entity": "publication", "iuid": "998ee78639d54b3a9729c42c99deb02c", "links": {"self": {"href": "https://publications.scilifelab.se/publication/998ee78639d54b3a9729c42c99deb02c.json"}, "display": {"href": "https://publications.scilifelab.se/publication/998ee78639d54b3a9729c42c99deb02c"}}, "title": "SARS-CoV-2 induces a durable and antigen specific humoral immunity after asymptomatic to mild COVID-19 infection.", "authors": [{"family": "Havervall", "given": "Sebastian", "initials": "S"}, {"family": "Jernbom Falk", "given": "August", "initials": "A", "orcid": "0000-0002-7773-1851", "researcher": {"href": "https://publications.scilifelab.se/researcher/fe6400bde68b46899515cef5bea05fca.json"}}, {"family": "Klingstr\u00f6m", "given": "Jonas", "initials": "J", "orcid": "0000-0001-9076-1441", "researcher": {"href": "https://publications.scilifelab.se/researcher/95c1b345ae434fb383b7fe6a1d053c80.json"}}, {"family": "Ng", "given": "Henry", "initials": "H", "orcid": "0000-0003-2873-9088", "researcher": {"href": "https://publications.scilifelab.se/researcher/5fcb12c664a64724b5cd42a1267a5bea.json"}}, {"family": "Greilert-Norin", "given": "Nina", "initials": "N"}, {"family": "Gabrielsson", "given": "Lena", "initials": "L"}, {"family": "Salomonsson", "given": "Ann-Christin", "initials": "AC"}, {"family": "Isaksson", "given": "Eva", "initials": "E", "orcid": "0000-0003-0289-8750", "researcher": {"href": "https://publications.scilifelab.se/researcher/f82b765ab5e64c7589dfe9f14db8478a.json"}}, {"family": "Rudberg", "given": "Ann-Sofie", "initials": "AS"}, {"family": "Hellstr\u00f6m", "given": "Cecilia", "initials": "C", "orcid": "0000-0003-0880-5375", "researcher": {"href": "https://publications.scilifelab.se/researcher/dbf3f75938f0442a9b1ae5c98565f44a.json"}}, {"family": "Andersson", "given": "Eni", "initials": "E", "orcid": "0000-0002-5115-0637", "researcher": {"href": "https://publications.scilifelab.se/researcher/ef94cf857c3746088cd01cee49242f24.json"}}, {"family": "Olofsson", "given": "Jennie", "initials": "J"}, {"family": "Skoglund", "given": "Lovisa", "initials": "L"}, {"family": "Yousef", "given": "Jamil", "initials": "J", "orcid": "0000-0001-5915-1258", "researcher": {"href": "https://publications.scilifelab.se/researcher/86be17c932614797a876bb55c7ce566e.json"}}, {"family": "Pin", "given": "Elisa", "initials": "E"}, {"family": "Christ", "given": "Wanda", "initials": "W", "orcid": "0000-0003-3886-5248", "researcher": {"href": "https://publications.scilifelab.se/researcher/38fe3a44fdb547b885cce5b6f490b2bc.json"}}, {"family": "Olausson", "given": "Mikaela", "initials": "M"}, {"family": "Hedhammar", "given": "My", "initials": "M"}, {"family": "Tegel", "given": "Hanna", "initials": "H"}, {"family": "Mangsbo", "given": "Sara", "initials": "S"}, {"family": "Phillipson", "given": "Mia", "initials": "M"}, {"family": "M\u00e5nberg", "given": "Anna", "initials": "A"}, {"family": "Hober", "given": "Sophia", "initials": "S", "orcid": "0000-0003-0605-8417", "researcher": {"href": "https://publications.scilifelab.se/researcher/f8dd8ee4264d4e4b912dacad3106f40a.json"}}, {"family": "Nilsson", "given": "Peter", "initials": "P", "orcid": "0000-0002-4657-8532", "researcher": {"href": "https://publications.scilifelab.se/researcher/799bcf1cf8cf451296f4535dd4ca9dc0.json"}}, {"family": "Th\u00e5lin", "given": "Charlotte", "initials": "C"}], "type": "journal article", "published": "2022-01-12", "journal": {"title": "PLoS ONE", "issn": "1932-6203", "volume": "17", "issue": "1", "pages": "e0262169", "issn-l": "1932-6203"}, "abstract": "Current SARS-CoV-2 serological assays generate discrepant results, and the longitudinal characteristics of antibodies targeting various antigens after asymptomatic to mild COVID-19 are yet to be established. This longitudinal cohort study including 1965 healthcare workers, of which 381 participants exhibited antibodies against the SARS-CoV-2 spike antigen at study inclusion, reveal that these antibodies remain detectable in most participants, 96%, at least four months post infection, despite having had no or mild symptoms. Virus neutralization capacity was confirmed by microneutralization assay in 91% of study participants at least four months post infection. Contrary to antibodies targeting the spike protein, antibodies against the nucleocapsid protein were only detected in 80% of previously anti-nucleocapsid IgG positive healthcare workers. Both anti-spike and anti-nucleocapsid IgG levels were significantly higher in previously hospitalized COVID-19 patients four months post infection than in healthcare workers four months post infection (p = 2*10-23 and 2*10-13 respectively). Although the magnitude of humoral response was associated with disease severity, our findings support a durable and functional humoral response after SARS-CoV-2 infection even after no or mild symptoms. We further demonstrate differences in antibody kinetics depending on the antigen, arguing against the use of the nucleocapsid protein as target antigen in population-based SARS-CoV-2 serological surveys.", "doi": "10.1371/journal.pone.0262169", "pmid": "35020778", "labels": {"Autoimmunity and Serology Profiling": "Collaborative"}, "xrefs": [{"db": "pii", "key": "PONE-D-21-27419"}], "notes": [], "created": "2022-01-14T08:23:14.930Z", "modified": "2022-01-14T08:23:15.078Z"}, {"entity": "publication", "iuid": "662e6300d57a45818e6a52bf43aa890a", "links": {"self": {"href": "https://publications.scilifelab.se/publication/662e6300d57a45818e6a52bf43aa890a.json"}, "display": {"href": "https://publications.scilifelab.se/publication/662e6300d57a45818e6a52bf43aa890a"}}, "title": "Robust humoral and cellular immune responses and low risk for reinfection at least 8 months following asymptomatic to mild COVID-19.", "authors": [{"family": "Havervall", "given": "Sebastian", "initials": "S", "orcid": "0000-0003-1671-8183", "researcher": {"href": "https://publications.scilifelab.se/researcher/dbd194b3cef64f9f9341fd163a035235.json"}}, {"family": "Ng", "given": "Henry", "initials": "H", "orcid": "0000-0003-2873-9088", "researcher": {"href": "https://publications.scilifelab.se/researcher/5fcb12c664a64724b5cd42a1267a5bea.json"}}, {"family": "Jernbom Falk", "given": "August", "initials": "A", "orcid": "0000-0002-7773-1851", "researcher": {"href": "https://publications.scilifelab.se/researcher/fe6400bde68b46899515cef5bea05fca.json"}}, {"family": "Greilert-Norin", "given": "Nina", "initials": "N", "orcid": "0000-0003-1492-9745", "researcher": {"href": "https://publications.scilifelab.se/researcher/cd0c03be884e4ae8840d0e0d04c411dd.json"}}, {"family": "M\u00e5nberg", "given": "Anna", "initials": "A", "orcid": "0000-0002-0056-1313", "researcher": {"href": "https://publications.scilifelab.se/researcher/6d155273b5b54e61b773f263e4f2ce9b.json"}}, {"family": "Marking", "given": "Ulrika", "initials": "U"}, {"family": "Laur\u00e9n", "given": "Ida", "initials": "I"}, {"family": "Gabrielsson", "given": "Lena", "initials": "L"}, {"family": "Salomonsson", "given": "Ann-Christin", "initials": "AC"}, {"family": "Aguilera", "given": "Katherina", "initials": "K"}, {"family": "Kihlgren", "given": "Martha", "initials": "M"}, {"family": "M\u00e5nsson", "given": "Maja", "initials": "M"}, {"family": "Rosell", "given": "Axel", "initials": "A", "orcid": "0000-0001-6280-0562", "researcher": {"href": "https://publications.scilifelab.se/researcher/bcddaba7a96a406b994756ab71427baf.json"}}, {"family": "Hellstr\u00f6m", "given": "Cecilia", "initials": "C", "orcid": "0000-0003-0880-5375", "researcher": {"href": "https://publications.scilifelab.se/researcher/dbf3f75938f0442a9b1ae5c98565f44a.json"}}, {"family": "Andersson", "given": "Eni", "initials": "E"}, {"family": "Olofsson", "given": "Jennie", "initials": "J", "orcid": "0000-0002-8593-9089", "researcher": {"href": "https://publications.scilifelab.se/researcher/d2b59febdeec4df99bf3a0d5480df305.json"}}, {"family": "Skoglund", "given": "Lovisa", "initials": "L"}, {"family": "Yousef", "given": "Jamil", "initials": "J", "orcid": "0000-0001-5915-1258", "researcher": {"href": "https://publications.scilifelab.se/researcher/86be17c932614797a876bb55c7ce566e.json"}}, {"family": "Pin", "given": "Elisa", "initials": "E", "orcid": "0000-0002-2158-2674", "researcher": {"href": "https://publications.scilifelab.se/researcher/ccb4db02b9784587b62020716ab87247.json"}}, {"family": "Lord", "given": "Martin", "initials": "M", "orcid": "0000-0002-3238-3187", "researcher": {"href": "https://publications.scilifelab.se/researcher/3e14847c142f4c359f2d531601436897.json"}}, {"family": "\u00c5berg", "given": "Mikael", "initials": "M", "orcid": "0000-0002-7858-8233", "researcher": {"href": "https://publications.scilifelab.se/researcher/90fa86e9aeaa43ea9547e48b4f3f24e3.json"}}, {"family": "Hedhammar", "given": "My", "initials": "M"}, {"family": "Tegel", "given": "Hanna", "initials": "H"}, {"family": "D\u00f6nnes", "given": "Pierre", "initials": "P", "orcid": "0000-0002-4613-2952", "researcher": {"href": "https://publications.scilifelab.se/researcher/56d32d60f9b547be8096c448fc013246.json"}}, {"family": "Phillipson", "given": "Mia", "initials": "M", "orcid": "0000-0002-2387-0266", "researcher": {"href": "https://publications.scilifelab.se/researcher/1ebf9ffcab3e4a19add4c6dd51b727b1.json"}}, {"family": "Nilsson", "given": "Peter", "initials": "P", "orcid": "0000-0002-4657-8532", "researcher": {"href": "https://publications.scilifelab.se/researcher/799bcf1cf8cf451296f4535dd4ca9dc0.json"}}, {"family": "Klingstr\u00f6m", "given": "Jonas", "initials": "J", "orcid": "0000-0001-9076-1441", "researcher": {"href": "https://publications.scilifelab.se/researcher/95c1b345ae434fb383b7fe6a1d053c80.json"}}, {"family": "Mangsbo", "given": "Sara", "initials": "S", "orcid": "0000-0002-1355-2678", "researcher": {"href": "https://publications.scilifelab.se/researcher/c743bbcad6554f049c8fc5f64a6801bc.json"}}, {"family": "Hober", "given": "Sophia", "initials": "S", "orcid": "0000-0003-0605-8417", "researcher": {"href": "https://publications.scilifelab.se/researcher/f8dd8ee4264d4e4b912dacad3106f40a.json"}}, {"family": "Th\u00e5lin", "given": "Charlotte", "initials": "C", "orcid": "0000-0002-1345-6491", "researcher": {"href": "https://publications.scilifelab.se/researcher/130fb6ef6b774613a767e98f9f9b2eb4.json"}}], "type": "journal article", "published": "2022-01-00", "journal": {"title": "J. Intern. Med.", "issn": "1365-2796", "issn-l": "0954-6820", "volume": "291", "issue": "1", "pages": "72-80"}, "abstract": "Emerging data support detectable immune responses for months after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and vaccination, but it is not yet established to what degree and for how long protection against reinfection lasts.\n\nWe investigated SARS-CoV-2-specific humoral and cellular immune responses more than 8 months post-asymptomatic, mild and severe infection in a cohort of 1884 healthcare workers (HCW) and 51 hospitalized COVID-19 patients. Possible protection against SARS-CoV-2 reinfection was analyzed by a weekly 3-month polymerase chain reaction (PCR) screening of 252 HCW that had seroconverted 7 months prior to start of screening and 48 HCW that had remained seronegative at multiple time points.\n\nAll COVID-19 patients and 96% (355/370) of HCW who were anti-spike IgG positive at inclusion remained anti-spike IgG positive at the 8-month follow-up. Circulating SARS-CoV-2-specific memory T cell responses were detected in 88% (45/51) of COVID-19 patients and in 63% (233/370) of seropositive HCW. The cumulative incidence of PCR-confirmed SARS-CoV-2 infection was 1% (3/252) among anti-spike IgG positive HCW (0.13 cases per 100 weeks at risk) compared to 23% (11/48) among anti-spike IgG negative HCW (2.78 cases per 100 weeks at risk), resulting in a protective effect of 95.2% (95% CI 81.9%-99.1%).\n\nThe vast majority of anti-spike IgG positive individuals remain anti-spike IgG positive for at least 8 months regardless of initial COVID-19 disease severity. The presence of anti-spike IgG antibodies is associated with a substantially reduced risk of reinfection up to 9 months following asymptomatic to mild COVID-19.", "doi": "10.1111/joim.13387", "pmid": "34459525", "labels": {"Autoimmunity and Serology Profiling": "Collaborative", "Affinity Proteomics Uppsala": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC8661920"}], "notes": [], "created": "2021-08-31T10:38:04.811Z", "modified": "2022-12-02T10:46:29.165Z"}, {"entity": "publication", "iuid": "9d0f9b6ced5447dfab67df3380c65330", "links": {"self": {"href": "https://publications.scilifelab.se/publication/9d0f9b6ced5447dfab67df3380c65330.json"}, "display": {"href": "https://publications.scilifelab.se/publication/9d0f9b6ced5447dfab67df3380c65330"}}, "title": "Systematic evaluation of SARS-CoV-2 antigens enables a highly specific and sensitive multiplex serological COVID-19 assay.", "authors": [{"family": "Hober", "given": "Sophia", "initials": "S", "orcid": "0000-0003-0605-8417", "researcher": {"href": "https://publications.scilifelab.se/researcher/f8dd8ee4264d4e4b912dacad3106f40a.json"}}, {"family": "Hellstr\u00f6m", "given": "Cecilia", "initials": "C"}, {"family": "Olofsson", "given": "Jennie", "initials": "J", "orcid": "0000-0002-8593-9089", "researcher": {"href": "https://publications.scilifelab.se/researcher/d2b59febdeec4df99bf3a0d5480df305.json"}}, {"family": "Andersson", "given": "Eni", "initials": "E", "orcid": "0000-0002-5115-0637", "researcher": {"href": "https://publications.scilifelab.se/researcher/ef94cf857c3746088cd01cee49242f24.json"}}, {"family": "Bergstr\u00f6m", "given": "Sofia", "initials": "S", "orcid": "0000-0003-2910-4754", "researcher": {"href": "https://publications.scilifelab.se/researcher/648c9ed3483a4eb8a1d228cf7e59f6a7.json"}}, {"family": "Jernbom Falk", "given": "August", "initials": "A", "orcid": "0000-0002-7773-1851", "researcher": {"href": "https://publications.scilifelab.se/researcher/fe6400bde68b46899515cef5bea05fca.json"}}, {"family": "Bayati", "given": "Shaghayegh", "initials": "S"}, {"family": "Mravinacova", "given": "Sara", "initials": "S"}, {"family": "Sj\u00f6berg", "given": "Ronald", "initials": "R", "orcid": "0000-0003-1363-5796", "researcher": {"href": "https://publications.scilifelab.se/researcher/d08326da26da422ab445a26563843e79.json"}}, {"family": "Yousef", "given": "Jamil", "initials": "J", "orcid": "0000-0001-5915-1258", "researcher": {"href": "https://publications.scilifelab.se/researcher/86be17c932614797a876bb55c7ce566e.json"}}, {"family": "Skoglund", "given": "Lovisa", "initials": "L"}, {"family": "Kanje", "given": "Sara", "initials": "S"}, {"family": "Berling", "given": "Anna", "initials": "A"}, {"family": "Svensson", "given": "Anne-Sophie", "initials": "AS"}, {"family": "Jensen", "given": "Gabriella", "initials": "G"}, {"family": "Enstedt", "given": "Henric", "initials": "H"}, {"family": "Afshari", "given": "Delaram", "initials": "D"}, {"family": "Xu", "given": "Lan Lan", "initials": "LL"}, {"family": "Zwahlen", "given": "Martin", "initials": "M"}, {"family": "von Feilitzen", "given": "Kalle", "initials": "K"}, {"family": "Hanke", "given": "Leo", "initials": "L"}, {"family": "Murrell", "given": "Ben", "initials": "B"}, {"family": "McInerney", "given": "Gerald", "initials": "G"}, {"family": "Karlsson Hedestam", "given": "Gunilla B", "initials": "GB"}, {"family": "Lendel", "given": "Christofer", "initials": "C"}, {"family": "Roth", "given": "Robert G", "initials": "RG"}, {"family": "Skoog", "given": "Ingmar", "initials": "I"}, {"family": "Svenungsson", "given": "Elisabet", "initials": "E"}, {"family": "Olsson", "given": "Tomas", "initials": "T"}, {"family": "Fogdell-Hahn", "given": "Anna", "initials": "A"}, {"family": "Lindroth", "given": "Ylva", "initials": "Y"}, {"family": "Lundgren", "given": "Maria", "initials": "M"}, {"family": "Maleki", "given": "Kimia T", "initials": "KT"}, {"family": "Lagerqvist", "given": "Nina", "initials": "N"}, {"family": "Klingstr\u00f6m", "given": "Jonas", "initials": "J", "orcid": "0000-0001-9076-1441", "researcher": {"href": "https://publications.scilifelab.se/researcher/95c1b345ae434fb383b7fe6a1d053c80.json"}}, {"family": "Da Silva Rodrigues", "given": "Rui", "initials": "R"}, {"family": "Muschiol", "given": "Sandra", "initials": "S"}, {"family": "Bogdanovic", "given": "Gordana", "initials": "G"}, {"family": "Arroyo M\u00fchr", "given": "Laila Sara", "initials": "LS"}, {"family": "Eklund", "given": "Carina", "initials": "C"}, {"family": "Lagheden", "given": "Camilla", "initials": "C"}, {"family": "Dillner", "given": "Joakim", "initials": "J"}, {"family": "Sivertsson", "given": "\u00c5sa", "initials": "\u00c5"}, {"family": "Havervall", "given": "Sebastian", "initials": "S", "orcid": "0000-0003-1671-8183", "researcher": {"href": "https://publications.scilifelab.se/researcher/dbd194b3cef64f9f9341fd163a035235.json"}}, {"family": "Th\u00e5lin", "given": "Charlotte", "initials": "C", "orcid": "0000-0002-1345-6491", "researcher": {"href": "https://publications.scilifelab.se/researcher/130fb6ef6b774613a767e98f9f9b2eb4.json"}}, {"family": "Tegel", "given": "Hanna", "initials": "H", "orcid": "0000-0002-7067-9173", "researcher": {"href": "https://publications.scilifelab.se/researcher/d3d733dbd7b84a6b88f7f5fcff7165f6.json"}}, {"family": "Pin", "given": "Elisa", "initials": "E", "orcid": "0000-0002-2158-2674", "researcher": {"href": "https://publications.scilifelab.se/researcher/ccb4db02b9784587b62020716ab87247.json"}}, {"family": "M\u00e5nberg", "given": "Anna", "initials": "A", "orcid": "0000-0002-0056-1313", "researcher": {"href": "https://publications.scilifelab.se/researcher/6d155273b5b54e61b773f263e4f2ce9b.json"}}, {"family": "Hedhammar", "given": "My", "initials": "M", "orcid": "0000-0003-0140-419X", "researcher": {"href": "https://publications.scilifelab.se/researcher/061cceecaf0e4bed8efabca146e5b235.json"}}, {"family": "Nilsson", "given": "Peter", "initials": "P", "orcid": "0000-0002-4657-8532", "researcher": {"href": "https://publications.scilifelab.se/researcher/799bcf1cf8cf451296f4535dd4ca9dc0.json"}}], "type": "journal article", "published": "2021-07-19", "journal": {"title": "Clin Transl Immunology", "issn": "2050-0068", "volume": "10", "issue": "7", "pages": "e1312", "issn-l": null}, "abstract": "The COVID-19 pandemic poses an immense need for accurate, sensitive and high-throughput clinical tests, and serological assays are needed for both overarching epidemiological studies and evaluating vaccines. Here, we present the development and validation of a high-throughput multiplex bead-based serological assay.\n\nMore than 100 representations of SARS-CoV-2 proteins were included for initial evaluation, including antigens produced in bacterial and mammalian hosts as well as synthetic peptides. The five best-performing antigens, three representing the spike glycoprotein and two representing the nucleocapsid protein, were further evaluated for detection of IgG antibodies in samples from 331 COVID-19 patients and convalescents, and in 2090 negative controls sampled before 2020.\n\nThree antigens were finally selected, represented by a soluble trimeric form and the S1-domain of the spike glycoprotein as well as by the C-terminal domain of the nucleocapsid. The sensitivity for these three antigens individually was found to be 99.7%, 99.1% and 99.7%, and the specificity was found to be 98.1%, 98.7% and 95.7%. The best assay performance was although achieved when utilising two antigens in combination, enabling a sensitivity of up to 99.7% combined with a specificity of 100%. Requiring any two of the three antigens resulted in a sensitivity of 99.7% and a specificity of 99.4%.\n\nThese observations demonstrate that a serological test based on a combination of several SARS-CoV-2 antigens enables a highly specific and sensitive multiplex serological COVID-19 assay.", "doi": "10.1002/cti2.1312", "pmid": "34295471", "labels": {"Autoimmunity and Serology Profiling": "Technology development"}, "xrefs": [{"db": "pii", "key": "CTI21312"}, {"db": "pmc", "key": "PMC8288725"}], "notes": [], "created": "2021-07-25T21:30:22.465Z", "modified": "2021-11-10T12:23:19.192Z"}]}