La demande
“Create an illustrative 2025 influenza A chronogram with H1N1 strains from 2021 and 2022, H3N2 strains from 2021, 2022 and 2023, highlighted H1N1 and H3N2 clades, and a years-before-2025 scale.”
Essayez ensuiteAdd an H3N2 2024 strain.Change the reference year to 2026.
Ce que contient ce dessin
Comprenez les décisions qui le sous-tendent.
01Season labels
Include the strain subtype and season.
02Clades
Highlight H1N1 and H3N2 separately.
03Time scale
State the reference year on the chronogram.
Use this as an illustrative communication aid; surveillance conclusions need source data and analysis.
FAQ
Questions fréquentes
What does the seasonal label show?
It identifies the subtype and year used for each selected strain.
Why use a chronogram?
A chronogram makes the time framing of a strain comparison explicit.
Is this surveillance evidence?
No. It is an illustrative example and does not replace a sourced surveillance analysis.