Thanks! I was hoping for an actual serology study showing that Vietnamese have more exposures to other coronaviruses than people in other countries, like you st

Thanks! I was hoping for an actual serology study showing that Vietnamese have more exposures to other coronaviruses than people in other countries, like you stated. Unfortunately, these links don’t offer any hard evidence at all to support that assertion, just speculation. The cross-reactivity study referenced in that NIH press release was conducted with samples from “USA, Netherlands, Germany, Singapore, and UK”, not Vietnam.