jmajew wrote:dice wrote:jmajew wrote:Good news...Today in Illinois we tested 17,688 people and of that we got 1,677 positive tests. This is the first time I have seen the percentage of positive tests below 10% in the state.
more available testing means that the symptoms don't have to be as bad in order for a person to get tested, though. it's difficult to suss out what's actually going on right now in terms of infection rates
Actually if the percent of positive tests goes down with more testing that means the infection rate is probably going down.
that assumes that when you double the amount of testing you're testing the same sample group, which is not necessarily the case. early in the process, only people who were exhibiting a narrow range of symptoms and severities were getting tested. thus the rate of positive tests was obviously going to be very high. now we have a lot more tests available, our criteria for GETTING tested is lower, and obviously the infection rate is thus going to be lower
say 1000 people get a test in a particular week and the rate of positive tests is 40%. the next week a lot more tests are available, so 2000 people get tested, w/ 34% positive. does that mean that the transmission of the virus has decreased by 6% in only a week? or is it a function of increased testing?












