Scientists at the Icahn School of Medicine at Mount Sinai Medical Center in New York have recorded new cases of asymptomatic transmission of the SARS-CoV-2 virus among US Marine recruits. This was announced in a press release on MedicalXpress.
The study involved about two thousand soldiers who were quarantined for two weeks. Several infected recruits were found to be showing symptoms even before a formal diagnosis was made, and transmission of the virus occurred despite strict social distancing, masking and isolation measures taken. In addition, in several cases SARS-CoV-2 has been identified through regular testing rather than testing in response to symptoms.
Study participants, who lived in pairs in rooms and did outdoor exercise, were tested within two days of the start of quarantine, seven days, and two weeks later with a nasal swab test. Analysis of the viral genomes of infected recruits revealed multiple localized cases of virus transmission during quarantine.
According to scientists, the study results can be extrapolated to schools, sports facilities and camps. To limit the spread of the virus, it is necessary to expand the organization of initial and retesting testing of all people, regardless of symptoms.