Breaking! Whisteblower!
suggesting...
suggesting..."
Science evolves. That's why the saying "it's settled science" is nonsensical and often comes from political morons who have no scientific background or basis.
This virologist (& her colleagues) is "suggesting" her scientific theory based on the scientific/medical evidence as this point.
If she were to come out and say, "I can guarantee you with 100% certainty," no questions asked, nobody can disprove, it's "settled science" she would have as much credibility as a political science major at any of the marxist "liberal arts" incubation centers across the country.