Thanks. Based on that, we can't conclude one way, or the other, without knowing specifics regarding Herman's cancer treatments.Attached below is information from an “Offical” source. This article discusses the effect of cancer and cancer treatments on the immune system:
https://www.cancer.org/treatment/tr...tions/why-people-with-cancer-are-at-risk.html
IOW, based only upon what you've posted, Herman's cancer may have had no effect on his covid result.