Among Marine Corps recruits, about 2 percent who were negative for SARS-CoV-2 at start of supervised quarantine tested positive by day 14<\/p>\n<\/h3>\n
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MONDAY, Nov. 16, 2020 (HealthDay News) — Transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can occur even under supervised quarantine conditions, according to a study published online Nov. 11 in the New England Journal of Medicine<\/em>.<\/p>\n Andrew G. Letizia, M.D., from the Naval Medical Research Center in Silver Spring, Maryland, and colleagues examined SARS-CoV-2 infection among U.S. Marine Corps recruits who underwent a two-week quarantine at home followed by a second supervised two-week quarantine at a closed college campus.<\/p>\n Within two days after arrival on campus, 16 of the 1,848 recruits who volunteered to participate in the study tested positive for SARS-CoV-2 (0.9 percent); 15 were asymptomatic. On day 7 or 14, 35 additional participants (1.9 percent) tested positive. Overall, 9.8 percent of the 51 who tested positive at any time had symptoms in the week before a positive test. Of the 1,554 recruits who declined to participate in the study, 1.7 percent tested positive on day 14. No infections were identified through testing as a result of daily symptom monitoring. Six transmission clusters among 18 participants were identified on analysis of 36 SARS-CoV-2 genomes obtained from 32 participants. Multiple local transmission events were supported by epidemiologic evidence, including transmission between roommates and among recruits in the same platoon.<\/p>\n “The data from this large study indicates that in order to curtail coronavirus transmission in group settings and prevent spill-over to the wider community, we need to establish widespread initial and repeated surveillance testing of all individuals regardless of symptoms,” a coauthor said in a statement.<\/p>\n Abstract\/Full Text<\/a> <\/p>\n