Последние добавленные видео:
herd-immunity
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6 years ago
157753 6 years ago 2:47How does herd immunity work?
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8 years ago
413801 8 years ago 3:08What is Herd Immunity?
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8 years ago
8350 8 years ago 1:45How does herd immunity work? [CBC News Explainer]
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4 years ago
173061 4 years ago 6:21What It Would Take to Reach Herd Immunity | WSJ
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4 years ago
44394 4 years ago 6:28Herd Immunity: Understanding COVID-19
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10 years ago
169493 10 years ago 4:50Vaccines and Herd Immunity
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6 years ago
26807 6 years ago 2:21Immunisation: Why we do it and how 'herd immunity' works - BBC News
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2 days ago
32 2 days ago 23:06Dr Peter McCullough™ with Sam Sorbo on the Evolving COVID-19 Vaccine Debacle 2021
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10 years ago
250463 10 years ago 4:36Vaccines and Herd Immunity
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2 years ago
26529 2 years ago 5:38A Level Biology Revision "Vaccination and Herd Immunity"
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6 years ago
5936 6 years ago 1:01How herd immunity works
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4 years ago
1129 4 years ago 1:17What is Herd Immunity?
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4 years ago
8970 4 years ago 4:35What is herd immunity?
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10 years ago
80853 10 years ago 1:07Herd Immunity
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10 years ago
57201 10 years ago 14:46Romina Libster: The power of herd immunity (with English subtitles) | TED
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8 years ago
84616 8 years ago 4:42The Weekly: Herd Immunity
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5 years ago
212538 5 years ago 2:14COVID-19: What is herd immunity?
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6 years ago
2655 6 years ago 2:25Vaccines: Herd Immunity
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4 years ago
15938 4 years ago 10:22COVID-19 mutant variant strains and herd immunity