| Delta | 100 0.6 | 5 | 1 3 | | | | | | | | PCR | | | 1 | 40% | | | | | | CT CT | | | | | | | | | | CT | | | | | | | | ● | ● | ● | ● | ● | ● | ● | ● | | ● | | | | | |