It's still unknown whether or not rapid COVID testing works on children, but health experts are forging ahead anyway.

A small but growing body of evidence, some of which has not yet been published in a peer-reviewed scientific journal, suggests that some rapid tests for the coronavirus may falter in very young people, letting low-level infections slip by unnoticed, according to The New York Times.

A recent study of more than 1,600 people in Massachusetts showed that Binax NOW — a rapid test manufactured by Abbott Laboratories — caught 96.5% of the coronavirus infections found by a more accurate laboratory test in adults with symptoms. But the rapid test detected just 77.8 percent of the symptomatic cases in people 18 or under. Among people without symptoms, the test faltered further, identifying 70.2 percent of adults and 63.6 percent of children.

According to the study, the rapid test detected just 77.8% of the symptomatic cases in people 18 or under, while among people without symptoms, the test faltered further, identifying 70.2% of adults and 63.6% of children.