Assertion: swine flu's case | /r/CapableOf | jump to 25% of influenza cases
Facets:
value: in 1918
type: TEMPORAL
Source sentences:
text: But in 1918, cases in the 5- to 15-year-old group jumped to 25% of influenza cases (compatible with exposure to an antigenically novel virus strain), while the >65 age group only accounted for 0.6% of the influenza cases, findings consistent with previously acquired protective immunity caused by an identical or closely related viral protein to which older persons had once been exposed.