Covid is not mentioned in that clip. The only claim made is that "Kenya is number 7 in vaccinations". This clip is too short and does not include any context. What was she talking before she made that claim? What did she say after the claim?
Duh! It's a COVID press briefing for heaven's sake.
She thanks Kenyans for coming out forward and being very enthusiastic about the vaccine.
What more context do you want? Or you think she's talking about Polio vaccine?