Fallacious argument on many levels... one is that you are assuming that the vast majority of virologists disagree with him. This is a very strong affirmation you should prove before... on the other hand the opinion of the majority is not the truth, that is not an argument but a rhetorical trick. Instead the discussion should happen on the matter... I don't pretend to claim Tarro is right. He could be wrong, but I provided a fact: a major expert with a name and a surname has a certain opinion and arguments to support it.