The weekly median age of persons with COVID-19–like illness-related ED visits, positive SARS-CoV-2 test results, and confirmed COVID-19 cases, as well as that of persons for whom all SARS-CoV-2 tests were conducted, were plotted nationally for the four U.S. National case counts, percentage distributions, and estimated incidence of confirmed COVID-19 cases were calculated by 10-year age increments and by month (May–August). Monthly incidence was calculated using 2018 U.S. Case data represent individual persons (some of whom might have had multiple positive test results). §§ Confirmed COVID-19 cases had a positive SARS-CoV-2 RT-PCR test result. Analyses were based on the specimen collection date or test order date.** The daily percentage of positive SARS-CoV-2 test results (percent positivity) was calculated as the number of positive test results divided by the sum of positive and negative test results.Ĭonfirmed COVID-19 cases were identified from individual-level case reports submitted by state health departments †† analyses were based on the date the case was reported to CDC. ¶ Data represent the number of specimens tested, not individual persons who received testing.
SARS-CoV-2 RT-PCR test results were obtained from COVID-19 electronic laboratory reporting data submitted by state health departments (37 states) and, when age was unavailable in state-submitted data, from data submitted directly by public health, commercial, and reference laboratories (13 states and DC). § Analyses of COVID-19–like illness-related ED visits were based on the ED visit date.
CONFIRMED CORONA CASES IN US CODE
COVID-19–like illness-related ED visits, reported by health facilities to the National Syndromic Surveillance Program (NSSP), † had fever with cough, shortness of breath, or difficulty breathing in the chief complaint text or a discharge diagnostic code for COVID-19 and no diagnostic codes for influenza. Given the role of asymptomatic and presymptomatic transmission ( 2), strict adherence to community mitigation strategies and personal preventive behaviors by younger adults is needed to help reduce their risk for infection and subsequent transmission of SARS-CoV-2 to persons at higher risk for severe illness.ĬDC examined age trends during May–August for 50 states and the District of Columbia (DC) using three indicators: 1) COVID-19–like illness-related ED visits 2) positive SARS-CoV-2 RT-PCR test results and 3) confirmed COVID-19 cases. In these regions, increases in the percentage of positive SARS-CoV-2 test results among adults aged 20–39 years preceded increases among adults aged ≥60 years by an average of 8.7 days (range = 4–15 days), suggesting that younger adults likely contributed to community transmission of COVID-19. The southern United States experienced regional outbreaks of COVID-19 in June. During June–August, COVID-19 incidence was highest in persons aged 20–29 years, who accounted for >20% of all confirmed cases. Similar patterns were seen for COVID-19–like illness-related ED visits and positive SARS-CoV-2 RT-PCR test results in all U.S.
Nationwide, the median age of COVID-19 cases declined from 46 years in May to 37 years in July and 38 in August. CDC examined the changing age distribution of the COVID-19 pandemic in the United States during May–August by assessing three indicators: COVID-19–like illness-related emergency department (ED) visits, positive reverse transcription–polymerase chain reaction (RT-PCR) test results for SARS-CoV-2, the virus that causes COVID-19, and confirmed COVID-19 cases. cases and more than 199,000 associated deaths.* Early in the pandemic, COVID-19 incidence was highest among older adults ( 1).
As of September 21, 2020, the coronavirus disease 2019 (COVID-19) pandemic had resulted in more than 6,800,000 reported U.S.
0 kommentar(er)
