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Updated: Jan 27, 2026

Measuring Influenza Neuraminidase Inhibition Antibody Titers by Enzyme-linked Lectin Assay
Published on: September 6, 2016
Novel influenza A(H1N2) seasonal reassortant identified in a patient sample, Sweden, January 2019
Åsa Wiman1,2, Theresa Enkirch1,2, AnnaSara Carnahan3
1Unit for Laboratory Surveillance of Viral Pathogens and Vaccine Preventable Diseases, Department of Microbiology, the Public Health Agency of Sweden, Solna, Sweden.
Abstract:
In January 2019, a human seasonal reassortant influenza A(H1N2) virus with a novel 7:1 genetic constellation was identified in a 68-year-old female patient with suspected pneumonia. The virus harboured A(H3N2) neuraminidase and remaining genes from A(H1N1)pdm09. The patient recovered after severe illness. No additional cases have been detected. This is the second identified A(H1N2) seasonal reassortant in a human in Europe within 1 year; a previous case was detected in the Netherlands in March 2018.
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