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Vaccine Straight Talk - Mandarin - Shared screen with speaker view
david
37:43
two different vaccines are not interchangeable, so if first shot with Moderna then the second shot is not able to go with Pfizer, am I correct?
david
39:41
do I have to have my 2nd shot on the 21st days?.
david
39:49
or can be a bit late?
david
41:19
Thank you!!
Meixin Zhang
43:02
Do the currently available vaccines have the cross effect for potential viral variants?
Meixin Zhang
44:41
Thank you!