{"id":1477844,"title":"How does herd immunity work?  - CIHR","sourceCode":"cihr","sourceName":"Canadian Institutes of Health Research","language":"en","captureDate":"2026-04-09","captureTimestamp":"2026-04-09T01:42:25.306000+00:00","jobId":8,"originalUrl":"https://cihr-irsc.gc.ca/e/52595.html?wbdisable=false","snippet":"How does herd immunity work? Contagious diseases can be tricky. When someone gets sick (infected), they can pass the sickness on to others. And if the disease is highly contagious, then the sick person can infect many others—who can then go on to infect many more, and so on. The…","rawSnapshotUrl":"/api/snapshots/raw/1477844","browseUrl":"https://replay.healtharchive.ca/job-8/20260409014225/https://cihr-irsc.gc.ca/e/52595.html?wbdisable=false#ha_snapshot=1477844","mimeType":"text/html","statusCode":200,"captureBackend":"browsertrix","captureFidelity":"high"}