Health
The majority of UK residents who tested positive for COVID-19 had no specific symptoms
Eighty-six percent of UK residents who were positive for COVID-19 during the blockage did not have specific viral symptoms (cough and / or fever, and / or loss of taste / smell), UCL researchers said. A new study was found. The authors state that a broader testing program is needed to catch “silent” infections and reduce future outbreaks.
Paper published today Clinical epidemiology , Data from the National Bureau of Statistics Coronavirus (COVID-19) Infection Survey Pilot Study were used-a large population-based study examining the association between Covid-19 symptoms and Covid-19 test results.
The study included data from a representative population sample of 36,061 people tested between April 26 and June 27, 2020, and provided information on whether or not they had symptoms. It was.
The data showed that 115 (0.32%) of the total 36,061 pilot studies showed positive test results. Focusing on those with COVID-19-specific symptoms (cough and / or fever, and / or loss of taste / smell), 158 (0.43%) had such symptoms on the day of the test. was.
Of the 115 people who tested positive, 16 (13.9%) reported symptoms, in contrast, 99 (86.1%) did not report specific symptoms on the day of the test.
The study also includes data on people who report a wide range of symptoms, such as fatigue and shortness of breath. Of the samples tested positive, 27 (23.5%) were symptomatic and 88 (76.5%) were asymptomatic on the day of the study.
The authors state that the findings will have a significant impact on current and future test programs.
The fact that so many people who tested positive were asymptomatic on the day of the positive test result requires changes to future testing strategies. More extensive testing helps catch “silent” infections and potentially prevent future outbreaks. “
Professor Irene Petersen, UCL Epidemiology and Healthcare
“Future testing programs will include a wider group of individuals, not just symptomatic cases, especially in high-risk environments and where many people work and live together, such as in meat factories and university halls. It needs to be examined frequently. For college halls, testing all students before going home for Christmas may be particularly relevant.
“Pooled tests are one way to pool multiple tests into one analysis and implement a broad test strategy that saves time and resources for individual tests. This strategy is an overall strategy. It’s an efficient way to test when the prevalence is low as a negative pool. Samples can quickly show that a large number of people are not infectious. “
The authors emphasize that a low proportion of Covid-19-positive individuals is asymptomatic in some studies, but the prevalence of asymptomatic cases is probably sampled and set in the study. Note that it is significantly different for.
For example, this study shows that 13 (5%) of the 262 confirmed cases admitted to a Beijing hospital were asymptomatic. In contrast, up to 40-75% were asymptomatic, according to reports from small Italian villages. A survey of 13,000 residents in Iceland found that 43 out of 100 people who tested positive for Covid-19 were asymptomatic.
Source:
Journal reference:
Petersen, I & Phillips, A (2020) Three-quarters of SARS-CoV-2 infected individuals are asymptomatic: Analysis of UK household survey data. Clinical epidemiology.. doi.org/10.2147/CLEP.S276825..
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