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Volume 32, Number 10—October 2026
Research
Isothermal Detection of Influenza D Virus using Reverse Transcription Loop-Mediated Isothermal Amplification
Figure 2

Figure 2. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) primers targeting the influenza D virus polymer basic protein 2 gene in study of isothermal detection of influenza D virus. All available influenza D virus polymer basic protein 2 gene sequences in the National Center for Biotechnology Information Nucleotide database (https://www.ncbi.nlm.nih.gov/nucleotide) were aligned and mutations were annotated. To improve coverage, primers were synthesized with degenerate nucleotides in positions with heterogeneity in the sequences. The consensus sequence and sequences of the 3 isolates (D/bovine/France/5920/2014, D/swine/Oklahoma/1334/2011, and D/swine/England/126471/2023) are shown for comparison. Primer target sequences are presented within the boxes, and the direction of binding is represented by the arrows.