According to the government the overall infection mortality rate is 0.096%;The virus does not have a 99% survival rate. Surviving Covid-19 does not mean recovering from it.
Written questions and answers - Written questions, answers and statements - UK Parliament
Information from UK Parliament on written questions & answers, written statements and daily reports.
questions-statements.parliament.uk
Whilst the majority of people do survive Covid, I accept your point that surviving covid doesn’t mean fully recovering from it for some.