<div>A team of researchers in Singapore, led by Dr. Joe Yeong, and Prof. Tony Kiat Hon Lim, have reported the presence of residual SARS-CoV-2 ribonucleic acid (RNA) &ndash; the virus' genetic material &ndash; in stool samples and gastrointestinal tissues from patients recovering from the coronavirus disease 2019 (COVID-19).</div>