SARS made people very sick very fast so it was easy to identify and quarantine patients. With extensive contact tracking it was able to be contained.
With covid19 many patients are able to continue their lives and infect others without being obviously sick themselves. This limited the ability to contain outbreaks without extensive testing.
With covid19 many patients are able to continue their lives and infect others without being obviously sick themselves. This limited the ability to contain outbreaks without extensive testing.