In this scenario, patients with classic CT patterns of COVID-19 and no other explanation for these findings should be treated as presumptive infections even if their initial RT-PCR test is negative.

在这种情况下，即使病程早期的RT-PCR测试结果为阴性，但患者具有COVID-19的典型CT影像学表现，且对这些发现不能用其他原因解释时，也应视为推定性感染，对其进行相应治疗。