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" ... On the subject of PCR testing, Giroir said, “I think it has served us all poorly to create the myth that it is a gold standard.” Echoing the arguments for rapid testing that epidemiologists like Michael Mina have made for months, he added that PCR tests can be “poor predictors of contagiousness” at the population level. Since May, the number of rapid antigen tests the US has on hand has grown from 1 million to 111 million. Yet due to concerns about their sensitivity and limited access to the general public, these tests remain greatly underutilized. ... "
" ... The researchers found that although young children had a somewhat lower risk of infection than adults and were less likely to become ill, children age 14 and younger transmit the virus more efficiently to other children and adults than adults themselves. Their risk of transmitting Covid-19 was 22.4 percent—more than twice that of adults aged 30 to 49, whose rate of contagiousness was about 11 percent. “Although childhood contacts were less likely to become cases,” they wrote, “children were more likely to infect household members.” ... "
" ... The specific disease is important to understand immunity contextually. Disease-causing microbes vary greatly in transmission routes, contagiousness, duration and severity of symptoms, mortality rates, and long-term health impact. The trouble is, of course, that diseases can mutate, often thwarting medical advances by researchers. For each specific infectious disease, there is a perfect storm of conditions that allows it to thrive, and these conditions will define which individuals are in the highest risk groups to contract it. ... "
" ... To create a real-time illness-signal Kinsa aggregates tens of millions of anonymized data inputs from close to a million US households with a Kinsa thermometer and applies AI to triage illnesses based on severity, duration and contagiousness. ... "
" ... “The virus is unpredictable on many levels, but the one thing that’s very predictable is the level of contagiousness that is involved with it,” Mavericks Head Coach Rick Carlisle said. “The NBA has done a really, really great job of communicating the safety protocols.” ... "