filmov
tv
Vaccines and herd immunity
Показать описание
This animation describes memory response, vaccinations, and herd immunity.
-
e-Bug is funded and operated by Public Health England.
-
e-Bug is funded and operated by Public Health England.
0:04:50
0:04:36
0:01:42
0:02:25
0:07:35
0:03:43
0:01:39
0:08:40
0:02:48
0:02:51
0:54:02
0:02:30
0:02:41
0:02:05
0:03:25
0:23:40
0:01:41
0:04:27
0:04:35
0:01:53
0:02:35
1:07:14
0:14:25
0:03:18