70.0 MB (6.9 MB compressed)
6060 x 4040 pixels
51.3 x 34.3 cm ⏐ 20.2 x 13.5 in (300dpi)
CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY
Influenza A virus (H3N2) is one of many viruses that cause influenza (flu). They can infect birds and mammals and have mutated into many strains. H3N2 is increasingly abundant in seasonal flu.
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