PMC:7148425 / 4256-4471 4 Projects
Annnotations
| Id | Subject | Object | Predicate | Lexical cue |
|---|---|---|---|---|
| T24 | 0-215 | Sentence | denotes | Achieving such immune protection by a vaccine is quite feasible in the young, but it may prove to be challenging in old populations as evidenced by the low efficacy of seasonal influenza vaccine in such populations. |