There is no proof that any asymptomatic spread occurred because the virus has never been isolated and proven to exist. Dr stefan lankas control experiments show that the process of cell culture itself creates the cytopathic effects seen that are deemed viral in origin even without any viral material added. The pcr test can not detect an infection nor is the test specific to a novel virus. I love the highwire but you really don’t go far enough in bringing to light the truth on this situation. Just because a person who was in contact with someone who tested positive also then goes on to test positive means nothing at all. It doesn’t prove that anything was spread. Kary mullis was very clear on what a pcr test can and can not do and it can not tell you if you are sick.