Mr. Bryant, of Quidel, who obtained an early copy of the College of Arizona research, praised the outcomes as “very, superb,” citing the Sofia’s capacity to root out “people who find themselves infectious.”
Quidel, which is working a number of research of its personal, doesn’t but have definitive outcomes that present the Sofia works in folks with out Covid-19 signs. However “primarily based on the info up to now, it appears to be relevant to that inhabitants,” Mr. Bryant stated of his firm’s outcomes.
Different consultants suggested warning.
Though C.T. values do have a tendency to extend as virus ranges diminish, exceptions to this development exist — and there’s no universal “magic-number cutoff” for infectiousness, Dr. Dien Bard stated.
Failing to develop the coronavirus out of an individual’s pattern additionally does not guarantee that individual is not contagious to others, stated Omai Garner, the affiliate director of medical microbiology within the UCLA Well being System, who was not concerned within the research.
A number of consultants famous that the College of Arizona research didn’t monitor transmission amongst its members, making it unattainable to attract conclusions about how, and from whom, the virus unfold.
Dr. Harris stated that a few of the issues concerning the Sofia’s accuracy may very well be overcome with repeat testing. Screened often sufficient with a speedy check, contaminated folks missed by one Sofia would most likely be detected with the following, particularly if the degrees of virus of their our bodies have been rising, Dr. Harris stated. He and his colleagues are actually gathering knowledge on College of Arizona athletes, who’re examined every day, to analyze this chance. Quidel has additionally partnered with the Pac-12 and Massive Ten Conferences to conduct every day exams.
Folks with signs or identified exposures to the coronavirus ought to nonetheless get probably the most exact and dependable exams out there — those who use P.C.R., stated Susan Butler-Wu, a medical microbiologist on the College of Southern California who was not concerned within the research. Extra knowledge, she added, can be wanted to determine how speedy exams match into the bigger diagnostic panorama.