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It leaves us with one less caregiver to be on assignment, and that leaves us short-staffed. Public health experts say testing delays present a major hurdle to reducing infections and tracking those who have been in close contact with a person who is positive for the virus. Thats why researchers are working to develop rapid tests that can be cheaply produced, self-administered and provide immediate, reliable results. For now, most tests to diagnose COVID-19 require laboratory processing, which means a built-in delay. Guidelines issued by the Centers for Disease Control and Prevention recommend that states, as they lift final virus restrictions, have a turnaround time of less than two days. But its unclear whether states have access to detailed data showing whether they are meeting the CDC standard, including how long it takes to process tests at independent labs. Labs track their own turnaround times, but the CDC said data such as how long it takes for a test to get to a lab and for a provider to receive the result and notify the patient are not tracked. That makes it difficult to determine a meaningful average of what patients are experiencing in each state. In the absence of publicly available federal data, the AP earlier this month surveyed nine states that were experiencing a 14-day uptick in new positive cases, plus New York, which has had the most COVID-19 cases. The state lab in New York was taking up to three days to report results to patients. California officials said the statewide turnaround time was 48 to 72 hours, depending on the lab. In Utah, anecdotal information suggested that results took 24 to 72 hours. Most of the 10 states surveyed said they did not have data on turnaround times for commercial labs in their state, creating another information gap. Health experts said this was not unusual, that state health departments have not typically been responsible for tracking individual laboratory turnaround times. Its a good question of who should be responsible for tracking this information and providing it back to the public, said Kelly Wroblewski, director of infectious diseases with the Association of Public Health Laboratories. There are other factors that can cause delays, from the time of day the test is taken to whether a lab shuts down for the evening. Staffing issues and shortages of testing supplies also can slow the process. Even people visiting the same testing location can have widely different experiences. Earlier this month, Jeff Barnes, a music therapist in metro Atlanta, went to the same drive-thru testing location a week after his wife and two daughters. They were still waiting when he received his results the next day. Theirs wouldnt come for seven days. Barnes said he was concerned what a similar delay would mean if schools reopen in the fall. They are going to have to make it more efficient, Barnes said. If I knew (my daughter) was in a classroom with 20 kids and 10 of them had results pending, I dont know that I would send her. Until rapid tests are widely available, health experts say it will continue to take a day or two to get results under the best circumstances. That creates more opportunities for people who might be infected but feel fine to pass the virus along to others. In late April and May, the state lab in Alabama had trouble acquiring reagents, the chemical substances used to process tests. That led to intermittent delays in reporting results, up to five days from when the lab received the specimen, according to Dr. Karen Landers, assistant state health officer with the Alabama Department of Public Health. Those problems have since been resolved, and the lab now has a turnaround time between 24 and 72 hours from the time it receives samples. One of the largest commercial laboratories, Quest Diagnostics, recently reported its average turnaround time as one day for priority patients and two to three days for all other populations. The company said it expects increased demand to result in longer waits of more than thee days. Other countries face similar challenges. Wait times in China vary by city, from as little as one day in Shanghai to four days in Wuhan, where the virus first emerged. In Japan, tests usually yield results within two days. Mandatory tests, such as those at airports, often come out sooner, according to the health ministry. Results in India initially took around 24 hours. But as infections and testing increased, so did delays. Now results often take two to three days or as long as a week, depending on location. The nearly two-week wait in South Africa makes effective treatment nearly impossible.
Found on FOX News 4 years ago
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