Pathogen Variant Surveillance

When to use

Any time an answer depends on what a pathogen population looks like now: which lineages are circulating, whether one is growing, what a lineage name currently means, or whether an assay target still matches.

The rule

Never state what is circulating, and never write a lineage name, from memory.

Three things go wrong at once, and only the first is an ordinary knowledge-cutoff problem: